18950308 has 54 divisors (see below), whose sum is σ = 38540166. Its totient is φ = 8146944.

The previous prime is 18950303. The next prime is 18950339. The reversal of 18950308 is 80305981.

It can be written as a sum of positive squares in 9 ways, for example, as 4571044 + 14379264 = 2138^2 + 3792^2 .

It is a super-2 number, since 2×18950308² = 718228346589728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (18950303) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 195316 + ... + 195412.

Almost surely, 2^18950308 is an apocalyptic number.

It is an amenable number.

18950308 is an abundant number, since it is smaller than the sum of its proper divisors (19589858).

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

18950308 is a wasteful number, since it uses less digits than its factorization.

18950308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 18950308 is about 4353.1951483939. The cubic root of 18950308 is about 266.6073333271.

The spelling of 18950308 in words is "eighteen million, nine hundred fifty thousand, three hundred eight".