118072945 has 4 divisors (see below), whose sum is σ = 141687540. Its totient is φ = 94458352.

The previous prime is 118072937. The next prime is 118072951. The reversal of 118072945 is 549270811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55219761 + 62853184 = 7431^2 + 7928^2 .

It is a cyclic number.

It is not a de Polignac number, because 118072945 - 2³ = 118072937 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 3 ways as a sum of consecutive naturals, for example, 11807290 + ... + 11807299.

It is an arithmetic number, because the mean of its divisors is an integer number (35421885).

Almost surely, 2^118072945 is an apocalyptic number.

It is an amenable number.

118072945 is a deficient number, since it is larger than the sum of its proper divisors (23614595).

118072945 is an equidigital number, since it uses as much as digits as its factorization.

118072945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23614594.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 118072945 is about 10866.1375382424. The cubic root of 118072945 is about 490.5878617134.

The spelling of 118072945 in words is "one hundred eighteen million, seventy-two thousand, nine hundred forty-five".