118921145 has 32 divisors (see below), whose sum is σ = 169019136. Its totient is φ = 78624000.

The previous prime is 118921129. The next prime is 118921151. The reversal of 118921145 is 541129811.

It is not a de Polignac number, because 118921145 - 2⁴ = 118921129 is a prime.

It is a super-2 number, since 2×118921145² = 28284477456222050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169295 + ... + 169995.

It is an arithmetic number, because the mean of its divisors is an integer number (5281848).

Almost surely, 2^118921145 is an apocalyptic number.

It is an amenable number.

118921145 is a deficient number, since it is larger than the sum of its proper divisors (50097991).

118921145 is a wasteful number, since it uses less digits than its factorization.

118921145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881.

The product of its digits is 2880, while the sum is 32.

The square root of 118921145 is about 10905.0972026846. The cubic root of 118921145 is about 491.7598043735.

The spelling of 118921145 in words is "one hundred eighteen million, nine hundred twenty-one thousand, one hundred forty-five".