18618058 has 12 divisors (see below), whose sum is σ = 28925910. Its totient is φ = 8987216.

The previous prime is 18618053. The next prime is 18618071. The reversal of 18618058 is 85081681.

It can be written as a sum of positive squares in 3 ways, for example, as 12581209 + 6036849 = 3547^2 + 2457^2 .

It is a super-3 number, since 3×18618058³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (18618053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3853 + ... + 7216.

Almost surely, 2^18618058 is an apocalyptic number.

18618058 is a deficient number, since it is larger than the sum of its proper divisors (10307852).

18618058 is a wasteful number, since it uses less digits than its factorization.

18618058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11129 (or 11100 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 37.

The square root of 18618058 is about 4314.8647719251. The cubic root of 18618058 is about 265.0400224351.

The spelling of 18618058 in words is "eighteen million, six hundred eighteen thousand, fifty-eight".