18413608 has 32 divisors (see below), whose sum is σ = 36036000. Its totient is φ = 8809920.

The previous prime is 18413581. The next prime is 18413609. The reversal of 18413608 is 80631481.

It is a self number, because there is not a number n which added to its sum of digits gives 18413608.

It is not an unprimeable number, because it can be changed into a prime (18413609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31963 + ... + 32533.

It is an arithmetic number, because the mean of its divisors is an integer number (1126125).

Almost surely, 2^18413608 is an apocalyptic number.

It is an amenable number.

18413608 is a deficient number, since it is larger than the sum of its proper divisors (17622392).

18413608 is a wasteful number, since it uses less digits than its factorization.

18413608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 741 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 18413608 is about 4291.1080154198. The cubic root of 18413608 is about 264.0662903626.

The spelling of 18413608 in words is "eighteen million, four hundred thirteen thousand, six hundred eight".