18613064 has 8 divisors (see below), whose sum is σ = 34899510. Its totient is φ = 9306528.

The previous prime is 18613061. The next prime is 18613087. The reversal of 18613064 is 46031681.

It can be written as a sum of positive squares in only one way, i.e., 18062500 + 550564 = 4250^2 + 742^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (18613061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1163309 + ... + 1163324.

Almost surely, 2^18613064 is an apocalyptic number.

It is an amenable number.

18613064 is a deficient number, since it is larger than the sum of its proper divisors (16286446).

18613064 is a wasteful number, since it uses less digits than its factorization.

18613064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326639 (or 2326635 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 18613064 is about 4314.2860359508. The cubic root of 18613064 is about 265.0163227160.

The spelling of 18613064 in words is "eighteen million, six hundred thirteen thousand, sixty-four".