18235930 has 32 divisors (see below), whose sum is σ = 33675264. Its totient is φ = 7108416.

The previous prime is 18235927. The next prime is 18235937. The reversal of 18235930 is 3953281.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18235892 and 18235901.

It is not an unprimeable number, because it can be changed into a prime (18235937) 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, 105324 + ... + 105496.

It is an arithmetic number, because the mean of its divisors is an integer number (1052352).

Almost surely, 2^18235930 is an apocalyptic number.

18235930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18235930 is a deficient number, since it is larger than the sum of its proper divisors (15439334).

18235930 is a wasteful number, since it uses less digits than its factorization.

18235930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390.

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

The square root of 18235930 is about 4270.3547861975. The cubic root of 18235930 is about 263.2141941791.

The spelling of 18235930 in words is "eighteen million, two hundred thirty-five thousand, nine hundred thirty".