109155690 has 48 divisors (see below), whose sum is σ = 324350208. Its totient is φ = 24949728.

The previous prime is 109155689. The next prime is 109155701. The reversal of 109155690 is 96551901.

109155690 is a `hidden beast` number, since 1 + 0 + 91 + 5 + 569 + 0 = 666.

It is a super-2 number, since 2×109155690² = 23829929318752200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86002 + ... + 87261.

It is an arithmetic number, because the mean of its divisors is an integer number (6757296).

Almost surely, 2^109155690 is an apocalyptic number.

109155690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

109155690 is an abundant number, since it is smaller than the sum of its proper divisors (215194518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109155690 is a wasteful number, since it uses less digits than its factorization.

109155690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173283 (or 173280 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 36.

The square root of 109155690 is about 10447.7600470149. The cubic root of 109155690 is about 477.9129437695.

The spelling of 109155690 in words is "one hundred nine million, one hundred fifty-five thousand, six hundred ninety".