18940160 has 36 divisors (see below), whose sum is σ = 45370668. Its totient is φ = 7575552.

The previous prime is 18940157. The next prime is 18940183. The reversal of 18940160 is 6104981.

It can be written as a sum of positive squares in 2 ways, for example, as 6885376 + 12054784 = 2624^2 + 3472^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6119 + ... + 8678.

Almost surely, 2^18940160 is an apocalyptic number.

18940160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18940160 is an abundant number, since it is smaller than the sum of its proper divisors (26430508).

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

18940160 is an equidigital number, since it uses as much as digits as its factorization.

18940160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14818 (or 14804 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 18940160 is about 4352.0294116653. The cubic root of 18940160 is about 266.5597349045.

The spelling of 18940160 in words is "eighteen million, nine hundred forty thousand, one hundred sixty".