18830916 has 36 divisors (see below), whose sum is σ = 51263212. Its totient is φ = 5793984.

The previous prime is 18830897. The next prime is 18830939. The reversal of 18830916 is 61903881.

18830916 = T₁₃₆ + T₁₃₇ + ... + T₄₈₆.

It can be written as a sum of positive squares in 2 ways, for example, as 8294400 + 10536516 = 2880^2 + 3246^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19651 + ... + 20586.

Almost surely, 2^18830916 is an apocalyptic number.

It is an amenable number.

18830916 is an abundant number, since it is smaller than the sum of its proper divisors (32432296).

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

18830916 is a wasteful number, since it uses less digits than its factorization.

18830916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40260 (or 40255 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 18830916 is about 4339.4603351108. The cubic root of 18830916 is about 266.0462542287.

The spelling of 18830916 in words is "eighteen million, eight hundred thirty thousand, nine hundred sixteen".