18996936 has 64 divisors (see below), whose sum is σ = 55056000. Its totient is φ = 5349888.

The previous prime is 18996917. The next prime is 18996953. The reversal of 18996936 is 63969981.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11490 + ... + 13038.

It is an arithmetic number, because the mean of its divisors is an integer number (860250).

Almost surely, 2^18996936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18996936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27528000).

18996936 is an abundant number, since it is smaller than the sum of its proper divisors (36059064).

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

18996936 is a wasteful number, since it uses less digits than its factorization.

18996936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638 (or 1634 counting only the distinct ones).

The product of its digits is 629856, while the sum is 51.

The square root of 18996936 is about 4358.5474644657. The cubic root of 18996936 is about 266.8258202719.

The spelling of 18996936 in words is "eighteen million, nine hundred ninety-six thousand, nine hundred thirty-six".