18812136 has 32 divisors (see below), whose sum is σ = 53749440. Its totient is φ = 5374848.

The previous prime is 18812119. The next prime is 18812177. The reversal of 18812136 is 63121881.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55821 + ... + 56156.

It is an arithmetic number, because the mean of its divisors is an integer number (1679670).

Almost surely, 2^18812136 is an apocalyptic number.

It is an amenable number.

18812136 is an abundant number, since it is smaller than the sum of its proper divisors (34937304).

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

18812136 is a wasteful number, since it uses less digits than its factorization.

18812136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111993 (or 111989 counting only the distinct ones).

The product of its digits is 2304, while the sum is 30.

The square root of 18812136 is about 4337.2959317990. The cubic root of 18812136 is about 265.9577825098.

The spelling of 18812136 in words is "eighteen million, eight hundred twelve thousand, one hundred thirty-six".