18115936 has 24 divisors (see below), whose sum is σ = 35769384. Its totient is φ = 9031680.

The previous prime is 18115919. The next prime is 18115939. The reversal of 18115936 is 63951181.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18115939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15136 + ... + 16288.

It is an arithmetic number, because the mean of its divisors is an integer number (1490391).

Almost surely, 2^18115936 is an apocalyptic number.

18115936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18115936 is a deficient number, since it is larger than the sum of its proper divisors (17653448).

18115936 is a wasteful number, since it uses less digits than its factorization.

18115936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654 (or 1646 counting only the distinct ones).

The product of its digits is 6480, while the sum is 34.

The square root of 18115936 is about 4256.2819455483. The cubic root of 18115936 is about 262.6355991783.

The spelling of 18115936 in words is "eighteen million, one hundred fifteen thousand, nine hundred thirty-six".