165414961 has 4 divisors (see below), whose sum is σ = 168536052. Its totient is φ = 162293872.

The previous prime is 165414943. The next prime is 165414971. The reversal of 165414961 is 169414561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 140564736 + 24850225 = 11856^2 + 4985^2 .

It is a cyclic number.

It is not a de Polignac number, because 165414961 - 2¹¹ = 165412913 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165414961.

It is not an unprimeable number, because it can be changed into a prime (165414941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1560466 + ... + 1560571.

It is an arithmetic number, because the mean of its divisors is an integer number (42134013).

Almost surely, 2^165414961 is an apocalyptic number.

It is an amenable number.

165414961 is a deficient number, since it is larger than the sum of its proper divisors (3121091).

165414961 is an equidigital number, since it uses as much as digits as its factorization.

165414961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121090.

The product of its digits is 25920, while the sum is 37.

The square root of 165414961 is about 12861.3747709955. The cubic root of 165414961 is about 548.9400644366.

It can be divided in two parts, 165414 and 961, that added together give a cube (166375 = 55³).

The spelling of 165414961 in words is "one hundred sixty-five million, four hundred fourteen thousand, nine hundred sixty-one".