118664138 has 8 divisors (see below), whose sum is σ = 181354788. Its totient is φ = 58212544.

The previous prime is 118664113. The next prime is 118664141. The reversal of 118664138 is 831466811.

It can be written as a sum of positive squares in 2 ways, for example, as 100661089 + 18003049 = 10033^2 + 4243^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559631 + ... + 559842.

Almost surely, 2^118664138 is an apocalyptic number.

118664138 is a deficient number, since it is larger than the sum of its proper divisors (62690650).

118664138 is a wasteful number, since it uses less digits than its factorization.

118664138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119528.

The product of its digits is 27648, while the sum is 38.

The square root of 118664138 is about 10893.3070277120. The cubic root of 118664138 is about 491.4052925164.

The spelling of 118664138 in words is "one hundred eighteen million, six hundred sixty-four thousand, one hundred thirty-eight".