165410091 has 48 divisors (see below), whose sum is σ = 305979648. Its totient is φ = 83592000.

The previous prime is 165410059. The next prime is 165410107. The reversal of 165410091 is 190014561.

165410091 is a `hidden beast` number, since 1 + 654 + 1 + 0 + 0 + 9 + 1 = 666.

It is not a de Polignac number, because 165410091 - 2⁵ = 165410059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165411091) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22416 + ... + 28866.

It is an arithmetic number, because the mean of its divisors is an integer number (6374576).

Almost surely, 2^165410091 is an apocalyptic number.

165410091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

165410091 is a deficient number, since it is larger than the sum of its proper divisors (140569557).

165410091 is a wasteful number, since it uses less digits than its factorization.

165410091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6512 (or 6509 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 165410091 is about 12861.1854430297. The cubic root of 165410091 is about 548.9346772488.

The spelling of 165410091 in words is "one hundred sixty-five million, four hundred ten thousand, ninety-one".