18550136 has 32 divisors (see below), whose sum is σ = 38130480. Its totient is φ = 8390400.

The previous prime is 18550127. The next prime is 18550139. The reversal of 18550136 is 63105581.

It is a junction number, because it is equal to n+sod(n) for n = 18550099 and 18550108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18550139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23996 + ... + 24756.

Almost surely, 2^18550136 is an apocalyptic number.

It is an amenable number.

18550136 is an abundant number, since it is smaller than the sum of its proper divisors (19580344).

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

18550136 is a wasteful number, since it uses less digits than its factorization.

18550136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055 (or 1051 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 18550136 is about 4306.9868818003. The cubic root of 18550136 is about 264.7173252550.

The spelling of 18550136 in words is "eighteen million, five hundred fifty thousand, one hundred thirty-six".