117155658 has 16 divisors (see below), whose sum is σ = 236101536. Its totient is φ = 38753520.

The previous prime is 117155639. The next prime is 117155663. The reversal of 117155658 is 856551711.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73741 + ... + 75312.

It is an arithmetic number, because the mean of its divisors is an integer number (14756346).

Almost surely, 2^117155658 is an apocalyptic number.

117155658 is an abundant number, since it is smaller than the sum of its proper divisors (118945878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117155658 is a wasteful number, since it uses less digits than its factorization.

117155658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149189.

The product of its digits is 42000, while the sum is 39.

The square root of 117155658 is about 10823.8467284048. The cubic root of 117155658 is about 489.3141285656.

The spelling of 117155658 in words is "one hundred seventeen million, one hundred fifty-five thousand, six hundred fifty-eight".