165633461 has 8 divisors (see below), whose sum is σ = 189394560. Its totient is φ = 141897168.

The previous prime is 165633437. The next prime is 165633491. The reversal of 165633461 is 164336561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165633461 - 2¹⁸ = 165371317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165633421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11480 + ... + 21518.

It is an arithmetic number, because the mean of its divisors is an integer number (23674320).

Almost surely, 2^165633461 is an apocalyptic number.

It is an amenable number.

165633461 is a deficient number, since it is larger than the sum of its proper divisors (23761099).

165633461 is a wasteful number, since it uses less digits than its factorization.

165633461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12403.

The product of its digits is 38880, while the sum is 35.

The square root of 165633461 is about 12869.8663940229. The cubic root of 165633461 is about 549.1816601386.

The spelling of 165633461 in words is "one hundred sixty-five million, six hundred thirty-three thousand, four hundred sixty-one".