18518152 has 8 divisors (see below), whose sum is σ = 34721550. Its totient is φ = 9259072.

The previous prime is 18518113. The next prime is 18518161. The reversal of 18518152 is 25181581.

It can be written as a sum of positive squares in only one way, i.e., 11195716 + 7322436 = 3346^2 + 2706^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1157377 + ... + 1157392.

Almost surely, 2^18518152 is an apocalyptic number.

It is an amenable number.

18518152 is a deficient number, since it is larger than the sum of its proper divisors (16203398).

18518152 is a wasteful number, since it uses less digits than its factorization.

18518152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314775 (or 2314771 counting only the distinct ones).

The product of its digits is 3200, while the sum is 31.

The square root of 18518152 is about 4303.2722433051. The cubic root of 18518152 is about 264.5650965475.

The spelling of 18518152 in words is "eighteen million, five hundred eighteen thousand, one hundred fifty-two".