118889091 has 12 divisors (see below), whose sum is σ = 173335032. Its totient is φ = 78518016.

The previous prime is 118889087. The next prime is 118889101. The reversal of 118889091 is 190988811.

It is not a de Polignac number, because 118889091 - 2² = 118889087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118889081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60766 + ... + 62691.

It is an arithmetic number, because the mean of its divisors is an integer number (14444586).

Almost surely, 2^118889091 is an apocalyptic number.

118889091 is a deficient number, since it is larger than the sum of its proper divisors (54445941).

118889091 is a wasteful number, since it uses less digits than its factorization.

118889091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123570 (or 123567 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 45.

The square root of 118889091 is about 10903.6274239356. The cubic root of 118889091 is about 491.7156174315.

The spelling of 118889091 in words is "one hundred eighteen million, eight hundred eighty-nine thousand, ninety-one".