18413456 has 20 divisors (see below), whose sum is σ = 35747712. Its totient is φ = 9188256.

The previous prime is 18413453. The next prime is 18413459. The reversal of 18413456 is 65431481.

It is an interprime number because it is at equal distance from previous prime (18413453) and next prime (18413459).

It is not an unprimeable number, because it can be changed into a prime (18413453) 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, 10841 + ... + 12423.

Almost surely, 2^18413456 is an apocalyptic number.

18413456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18413456 is a deficient number, since it is larger than the sum of its proper divisors (17334256).

18413456 is a wasteful number, since it uses less digits than its factorization.

18413456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318 (or 2312 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 18413456 is about 4291.0903043399. The cubic root of 18413456 is about 264.0655637589.

The spelling of 18413456 in words is "eighteen million, four hundred thirteen thousand, four hundred fifty-six".