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130001863 = 685718959
BaseRepresentation
bin1111011111110…
…10101111000111
3100001121210000211
413233322233013
5231240024423
620522220251
73135666115
oct757725707
9301553024
10130001863
1167423362
1237654687
1320c195a4
14133a0ab5
15b62e10d
hex7bfabc7

130001863 has 4 divisors (see below), whose sum is σ = 130027680. Its totient is φ = 129976048.

The previous prime is 130001843. The next prime is 130001869. The reversal of 130001863 is 368100031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130001863 - 29 = 130001351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130001869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2623 + ... + 16336.

It is an arithmetic number, because the mean of its divisors is an integer number (32506920).

Almost surely, 2130001863 is an apocalyptic number.

130001863 is a deficient number, since it is larger than the sum of its proper divisors (25817).

130001863 is an equidigital number, since it uses as much as digits as its factorization.

130001863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25816.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 130001863 is about 11401.8359486532. The cubic root of 130001863 is about 506.5821217908.

Adding to 130001863 its reverse (368100031), we get a palindrome (498101894).

The spelling of 130001863 in words is "one hundred thirty million, one thousand, eight hundred sixty-three".

Divisors: 1 6857 18959 130001863