117989186 has 16 divisors (see below), whose sum is σ = 204829440. Its totient is φ = 49926240.

The previous prime is 117989153. The next prime is 117989219. The reversal of 117989186 is 681989711.

It is an interprime number because it is at equal distance from previous prime (117989153) and next prime (117989219).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52235 + ... + 54446.

It is an arithmetic number, because the mean of its divisors is an integer number (12801840).

Almost surely, 2^117989186 is an apocalyptic number.

117989186 is a deficient number, since it is larger than the sum of its proper divisors (86840254).

117989186 is a wasteful number, since it uses less digits than its factorization.

117989186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106769.

The product of its digits is 217728, while the sum is 50.

The square root of 117989186 is about 10862.2827250997. The cubic root of 117989186 is about 490.4718292924.

The spelling of 117989186 in words is "one hundred seventeen million, nine hundred eighty-nine thousand, one hundred eighty-six".