18487368 has 48 divisors (see below), whose sum is σ = 50270220. Its totient is φ = 6137856.

The previous prime is 18487363. The next prime is 18487393. The reversal of 18487368 is 86378481.

It can be written as a sum of positive squares in 2 ways, for example, as 17994564 + 492804 = 4242^2 + 702^2 .

It is not an unprimeable number, because it can be changed into a prime (18487363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30880 + ... + 31472.

Almost surely, 2^18487368 is an apocalyptic number.

18487368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18487368 is an abundant number, since it is smaller than the sum of its proper divisors (31782852).

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

18487368 is a wasteful number, since it uses less digits than its factorization.

18487368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038 (or 1031 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 18487368 is about 4299.6939425964. The cubic root of 18487368 is about 264.4184136408.

It can be divided in two parts, 1848 and 7368, that added together give a square (9216 = 96²).

The spelling of 18487368 in words is "eighteen million, four hundred eighty-seven thousand, three hundred sixty-eight".