18157058 has 8 divisors (see below), whose sum is σ = 27749628. Its totient is φ = 8907184.

The previous prime is 18157057. The next prime is 18157079. The reversal of 18157058 is 85075181.

18157058 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in 2 ways, for example, as 17081689 + 1075369 = 4133^2 + 1037^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18157057) 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, 85541 + ... + 85752.

Almost surely, 2^18157058 is an apocalyptic number.

18157058 is a deficient number, since it is larger than the sum of its proper divisors (9592570).

18157058 is a wasteful number, since it uses less digits than its factorization.

18157058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171348.

The product of its (nonzero) digits is 11200, while the sum is 35.

The square root of 18157058 is about 4261.1099492972. The cubic root of 18157058 is about 262.8341709322.

The spelling of 18157058 in words is "eighteen million, one hundred fifty-seven thousand, fifty-eight".