165954957 has 8 divisors (see below), whose sum is σ = 252883776. Its totient is φ = 94831392.

The previous prime is 165954941. The next prime is 165954961. The reversal of 165954957 is 759459561.

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

It is not a de Polignac number, because 165954957 - 2⁴ = 165954941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165954937) 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 7 ways as a sum of consecutive naturals, for example, 3951288 + ... + 3951329.

It is an arithmetic number, because the mean of its divisors is an integer number (31610472).

Almost surely, 2^165954957 is an apocalyptic number.

It is an amenable number.

165954957 is a deficient number, since it is larger than the sum of its proper divisors (86928819).

165954957 is an equidigital number, since it uses as much as digits as its factorization.

165954957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7902627.

The product of its digits is 1701000, while the sum is 51.

The square root of 165954957 is about 12882.3506007250. The cubic root of 165954957 is about 549.5367526309.

It can be divided in two parts, 1659 and 54957, that added together give a triangular number (56616 = T₃₃₆).

The spelling of 165954957 in words is "one hundred sixty-five million, nine hundred fifty-four thousand, nine hundred fifty-seven".