108815913 has 8 divisors (see below), whose sum is σ = 161208800. Its totient is φ = 72543924.

The previous prime is 108815891. The next prime is 108815957. The reversal of 108815913 is 319518801.

It is not a de Polignac number, because 108815913 - 2⁵ = 108815881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108815513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2015083 + ... + 2015136.

It is an arithmetic number, because the mean of its divisors is an integer number (20151100).

Almost surely, 2^108815913 is an apocalyptic number.

It is an amenable number.

108815913 is a deficient number, since it is larger than the sum of its proper divisors (52392887).

108815913 is an equidigital number, since it uses as much as digits as its factorization.

108815913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030228 (or 4030222 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The square root of 108815913 is about 10431.4866150516. The cubic root of 108815913 is about 477.4165500212.

The spelling of 108815913 in words is "one hundred eight million, eight hundred fifteen thousand, nine hundred thirteen".