118918388 has 6 divisors (see below), whose sum is σ = 208107186. Its totient is φ = 59459192.

The previous prime is 118918381. The next prime is 118918421. The reversal of 118918388 is 883819811.

It can be written as a sum of positive squares in only one way, i.e., 87086224 + 31832164 = 9332^2 + 5642^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118918381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14864795 + ... + 14864802.

It is an arithmetic number, because the mean of its divisors is an integer number (34684531).

Almost surely, 2^118918388 is an apocalyptic number.

It is an amenable number.

118918388 is a deficient number, since it is larger than the sum of its proper divisors (89188798).

118918388 is a wasteful number, since it uses less digits than its factorization.

118918388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29729601 (or 29729599 counting only the distinct ones).

The product of its digits is 110592, while the sum is 47.

The square root of 118918388 is about 10904.9707931750. The cubic root of 118918388 is about 491.7560041179.

The spelling of 118918388 in words is "one hundred eighteen million, nine hundred eighteen thousand, three hundred eighty-eight".