117778858 has 8 divisors (see below), whose sum is σ = 182367360. Its totient is φ = 56989740.

The previous prime is 117778841. The next prime is 117778867. The reversal of 117778858 is 858877711.

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

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, 949768 + ... + 949891.

It is an arithmetic number, because the mean of its divisors is an integer number (22795920).

Almost surely, 2^117778858 is an apocalyptic number.

117778858 is a deficient number, since it is larger than the sum of its proper divisors (64588502).

117778858 is a wasteful number, since it uses less digits than its factorization.

117778858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899692.

The product of its digits is 878080, while the sum is 52.

The square root of 117778858 is about 10852.5968320951. The cubic root of 117778858 is about 490.1802169253.

The spelling of 117778858 in words is "one hundred seventeen million, seven hundred seventy-eight thousand, eight hundred fifty-eight".