165091461 has 32 divisors (see below), whose sum is σ = 240952320. Its totient is φ = 100262400.

The previous prime is 165091441. The next prime is 165091489. The reversal of 165091461 is 164190561.

It is not a de Polignac number, because 165091461 - 2⁵ = 165091429 is a prime.

It is a super-2 number, since 2×165091461² = 54510380990229042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165091441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109831 + ... + 111323.

It is an arithmetic number, because the mean of its divisors is an integer number (7529760).

Almost surely, 2^165091461 is an apocalyptic number.

It is an amenable number.

165091461 is a deficient number, since it is larger than the sum of its proper divisors (75860859).

165091461 is a wasteful number, since it uses less digits than its factorization.

165091461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 165091461 is about 12848.7922000474. The cubic root of 165091461 is about 548.5819791284.

The spelling of 165091461 in words is "one hundred sixty-five million, ninety-one thousand, four hundred sixty-one".