Search a number
-
+
1868827950 = 23652115979
BaseRepresentation
bin110111101100100…
…0000110100101110
311211020112022000000
41233121000310232
512311404443300
6505235245130
764211526663
oct15731006456
94736468000
101868827950
118799a5110
12441a497a6
1323a23b272
1413a2b1a6a
15ae101c00
hex6f640d2e

1868827950 has 336 divisors, whose sum is σ = 5854982400. Its totient is φ = 439732800.

The previous prime is 1868827949. The next prime is 1868827951. The reversal of 1868827950 is 597288681.

1868827950 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1868827949) and next prime (1868827951).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868827951) by changing a digit.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 23656011 + ... + 23656089.

Almost surely, 21868827950 is an apocalyptic number.

1868827950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1868827950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2927491200).

1868827950 is an abundant number, since it is smaller than the sum of its proper divisors (3986154450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1868827950 is a wasteful number, since it uses less digits than its factorization.

1868827950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The square root of 1868827950 is about 43229.9427480537. The cubic root of 1868827950 is about 1231.7515201183.

It can be divided in two parts, 18688279 and 50, that added together give a square (18688329 = 43232).

The spelling of 1868827950 in words is "one billion, eight hundred sixty-eight million, eight hundred twenty-seven thousand, nine hundred fifty".