18532930 has 32 divisors (see below), whose sum is σ = 36905904. Its totient is φ = 6656256.

The previous prime is 18532919. The next prime is 18532931. The reversal of 18532930 is 3923581.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 14584761 + 3948169 = 3819^2 + 1987^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18532892 and 18532901.

It is not an unprimeable number, because it can be changed into a prime (18532931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2884 + ... + 6736.

Almost surely, 2^18532930 is an apocalyptic number.

18532930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18532930 is a deficient number, since it is larger than the sum of its proper divisors (18372974).

18532930 is a wasteful number, since it uses less digits than its factorization.

18532930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 18532930 is about 4304.9889663041. The cubic root of 18532930 is about 264.6354546018.

The spelling of 18532930 in words is "eighteen million, five hundred thirty-two thousand, nine hundred thirty".