18813416 has 16 divisors (see below), whose sum is σ = 35345700. Its totient is φ = 9387904.

The previous prime is 18813391. The next prime is 18813419. The reversal of 18813416 is 61431881.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18748900 + 64516 = 4330^2 + 254^2 .

It is not an unprimeable number, because it can be changed into a prime (18813419) 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, 2486 + ... + 6618.

Almost surely, 2^18813416 is an apocalyptic number.

It is an amenable number.

18813416 is a deficient number, since it is larger than the sum of its proper divisors (16532284).

18813416 is a wasteful number, since it uses less digits than its factorization.

18813416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708 (or 4704 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 18813416 is about 4337.4434866635. The cubic root of 18813416 is about 265.9638144004.

The spelling of 18813416 in words is "eighteen million, eight hundred thirteen thousand, four hundred sixteen".