18418264 has 8 divisors (see below), whose sum is σ = 34534260. Its totient is φ = 9209128.

The previous prime is 18418261. The next prime is 18418291. The reversal of 18418264 is 46281481.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18418261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1151134 + ... + 1151149.

Almost surely, 2^18418264 is an apocalyptic number.

It is an amenable number.

18418264 is a deficient number, since it is larger than the sum of its proper divisors (16115996).

18418264 is a wasteful number, since it uses less digits than its factorization.

18418264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302289 (or 2302285 counting only the distinct ones).

The product of its digits is 12288, while the sum is 34.

The square root of 18418264 is about 4291.6504983514. The cubic root of 18418264 is about 264.0885454440.

The spelling of 18418264 in words is "eighteen million, four hundred eighteen thousand, two hundred sixty-four".