18350916 has 12 divisors (see below), whose sum is σ = 42818832. Its totient is φ = 6116968.

The previous prime is 18350909. The next prime is 18350921. The reversal of 18350916 is 61905381.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×18350916² = 673512236078112, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764610 + ... + 764633.

It is an arithmetic number, because the mean of its divisors is an integer number (3568236).

Almost surely, 2^18350916 is an apocalyptic number.

It is an amenable number.

18350916 is an abundant number, since it is smaller than the sum of its proper divisors (24467916).

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

18350916 is a wasteful number, since it uses less digits than its factorization.

18350916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529250 (or 1529248 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 18350916 is about 4283.7969139538. The cubic root of 18350916 is about 263.7662646544.

The spelling of 18350916 in words is "eighteen million, three hundred fifty thousand, nine hundred sixteen".