108118945 has 24 divisors (see below), whose sum is σ = 143572968. Its totient is φ = 78101760.

The previous prime is 108118909. The next prime is 108118951. The reversal of 108118945 is 549811801.

It can be written as a sum of positive squares in 4 ways, for example, as 62204769 + 45914176 = 7887^2 + 6776^2 .

It is not a de Polignac number, because 108118945 - 2⁹ = 108118433 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 23 ways as a sum of consecutive naturals, for example, 104149 + ... + 105181.

It is an arithmetic number, because the mean of its divisors is an integer number (5982207).

Almost surely, 2^108118945 is an apocalyptic number.

It is an amenable number.

108118945 is a deficient number, since it is larger than the sum of its proper divisors (35454023).

108118945 is a wasteful number, since it uses less digits than its factorization.

108118945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233 (or 1222 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 37.

The square root of 108118945 is about 10398.0260145857. The cubic root of 108118945 is about 476.3950786871.

The spelling of 108118945 in words is "one hundred eight million, one hundred eighteen thousand, nine hundred forty-five".