118117945 has 8 divisors (see below), whose sum is σ = 154627200. Its totient is φ = 85903920.

The previous prime is 118117933. The next prime is 118117991. The reversal of 118117945 is 549711811.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 118117945 - 2²³ = 109729337 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073745 + ... + 1073854.

It is an arithmetic number, because the mean of its divisors is an integer number (19328400).

Almost surely, 2^118117945 is an apocalyptic number.

It is an amenable number.

118117945 is a deficient number, since it is larger than the sum of its proper divisors (36509255).

118117945 is a wasteful number, since it uses less digits than its factorization.

118117945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147615.

The product of its digits is 10080, while the sum is 37.

The square root of 118117945 is about 10868.2079939611. The cubic root of 118117945 is about 490.6501781337.

The spelling of 118117945 in words is "one hundred eighteen million, one hundred seventeen thousand, nine hundred forty-five".