18394912 has 24 divisors (see below), whose sum is σ = 36312192. Its totient is φ = 9172800.

The previous prime is 18394897. The next prime is 18394919. The reversal of 18394912 is 21949381.

It is not an unprimeable number, because it can be changed into a prime (18394919) 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, 19737 + ... + 20647.

It is an arithmetic number, because the mean of its divisors is an integer number (1513008).

Almost surely, 2^18394912 is an apocalyptic number.

It is an amenable number.

18394912 is a deficient number, since it is larger than the sum of its proper divisors (17917280).

18394912 is an equidigital number, since it uses as much as digits as its factorization.

18394912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552 (or 1544 counting only the distinct ones).

The product of its digits is 15552, while the sum is 37.

The square root of 18394912 is about 4288.9290038423. The cubic root of 18394912 is about 263.9768880900.

It can be divided in two parts, 18394 and 912, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 18394912 in words is "eighteen million, three hundred ninety-four thousand, nine hundred twelve".