118189506 has 16 divisors (see below), whose sum is σ = 236487744. Its totient is φ = 39378384.

The previous prime is 118189501. The next prime is 118189517. The reversal of 118189506 is 605981811.

It is not an unprimeable number, because it can be changed into a prime (118189501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19020 + ... + 24456.

It is an arithmetic number, because the mean of its divisors is an integer number (14780484).

Almost surely, 2^118189506 is an apocalyptic number.

118189506 is an abundant number, since it is smaller than the sum of its proper divisors (118298238).

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

118189506 is a wasteful number, since it uses less digits than its factorization.

118189506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9065.

The product of its (nonzero) digits is 17280, while the sum is 39.

The square root of 118189506 is about 10871.4997125512. The cubic root of 118189506 is about 490.7492438856.

The spelling of 118189506 in words is "one hundred eighteen million, one hundred eighty-nine thousand, five hundred six".