109170165 has 32 divisors (see below), whose sum is σ = 193205376. Its totient is φ = 52289280.

The previous prime is 109170157. The next prime is 109170169. The reversal of 109170165 is 561071901.

It is not a de Polignac number, because 109170165 - 2³ = 109170157 is a prime.

It is a super-2 number, since 2×109170165² = 23836249852254450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109170169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 351 + ... + 14780.

It is an arithmetic number, because the mean of its divisors is an integer number (6037668).

Almost surely, 2^109170165 is an apocalyptic number.

109170165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109170165 is a deficient number, since it is larger than the sum of its proper divisors (84035211).

109170165 is a wasteful number, since it uses less digits than its factorization.

109170165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15189.

The product of its (nonzero) digits is 1890, while the sum is 30.

The square root of 109170165 is about 10448.4527562697. The cubic root of 109170165 is about 477.9340679824.

The spelling of 109170165 in words is "one hundred nine million, one hundred seventy thousand, one hundred sixty-five".