109137915 has 32 divisors (see below), whose sum is σ = 195186240. Its totient is φ = 57858048.

The previous prime is 109137869. The next prime is 109137961. The reversal of 109137915 is 519731901.

It is an interprime number because it is at equal distance from previous prime (109137869) and next prime (109137961).

It is not a de Polignac number, because 109137915 - 2⁸ = 109137659 is a prime.

It is a super-2 number, since 2×109137915² = 23822168981094450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 109137915.

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, 21019 + ... + 25691.

It is an arithmetic number, because the mean of its divisors is an integer number (6099570).

Almost surely, 2^109137915 is an apocalyptic number.

109137915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

109137915 is a deficient number, since it is larger than the sum of its proper divisors (86048325).

109137915 is a wasteful number, since it uses less digits than its factorization.

109137915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4860 (or 4854 counting only the distinct ones).

The product of its (nonzero) digits is 8505, while the sum is 36.

The square root of 109137915 is about 10446.9093515738. The cubic root of 109137915 is about 477.8870011191.

The spelling of 109137915 in words is "one hundred nine million, one hundred thirty-seven thousand, nine hundred fifteen".