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1930 = 25193
BaseRepresentation
bin11110001010
32122111
4132022
530210
612534
75425
oct3612
92574
101930
1114a5
12114a
13b56
149bc
1588a
hex78a

1930 has 8 divisors (see below), whose sum is σ = 3492. Its totient is φ = 768.

The previous prime is 1913. The next prime is 1931. The reversal of 1930 is 391.

It can be divided in two parts, 19 and 30, that added together give a square (49 = 72).

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1849 + 81 = 43^2 + 9^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 12, base 14, base 15 and base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1930.

It is not an unprimeable number, because it can be changed into a prime (1931) 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, 87 + ... + 106.

1930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1930 is a deficient number, since it is larger than the sum of its proper divisors (1562).

1930 is a wasteful number, since it uses less digits than its factorization.

1930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 1930 is about 43.9317652730. The cubic root of 1930 is about 12.4504706735.

The spelling of 1930 in words is "one thousand, nine hundred thirty".

Divisors: 1 2 5 10 193 386 965 1930