118878993 has 6 divisors (see below), whose sum is σ = 171714114. Its totient is φ = 79252656.

The previous prime is 118878989. The next prime is 118879001. The reversal of 118878993 is 399878811.

It can be written as a sum of positive squares in only one way, i.e., 116899344 + 1979649 = 10812^2 + 1407^2 .

It is not a de Polignac number, because 118878993 - 2² = 118878989 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (118878293) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6604380 + ... + 6604397.

It is an arithmetic number, because the mean of its divisors is an integer number (28619019).

Almost surely, 2^118878993 is an apocalyptic number.

It is an amenable number.

118878993 is a deficient number, since it is larger than the sum of its proper divisors (52835121).

118878993 is a wasteful number, since it uses less digits than its factorization.

118878993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13208783 (or 13208780 counting only the distinct ones).

The product of its digits is 870912, while the sum is 54.

The square root of 118878993 is about 10903.1643571947. The cubic root of 118878993 is about 491.7016955349.

The spelling of 118878993 in words is "one hundred eighteen million, eight hundred seventy-eight thousand, nine hundred ninety-three".