118138388 has 24 divisors (see below), whose sum is σ = 209517672. Its totient is φ = 58281984.

The previous prime is 118138357. The next prime is 118138399. The reversal of 118138388 is 883831811.

It can be written as a sum of positive squares in 4 ways, for example, as 24964 + 118113424 = 158^2 + 10868^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 105206 + ... + 106322.

It is an arithmetic number, because the mean of its divisors is an integer number (8729903).

Almost surely, 2^118138388 is an apocalyptic number.

It is an amenable number.

118138388 is a deficient number, since it is larger than the sum of its proper divisors (91379284).

118138388 is a wasteful number, since it uses less digits than its factorization.

118138388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451 (or 1449 counting only the distinct ones).

The product of its digits is 36864, while the sum is 41.

The square root of 118138388 is about 10869.1484487056. The cubic root of 118138388 is about 490.6784825627.

The spelling of 118138388 in words is "one hundred eighteen million, one hundred thirty-eight thousand, three hundred eighty-eight".