165161002 has 8 divisors (see below), whose sum is σ = 247812516. Its totient is φ = 82556832.

The previous prime is 165160991. The next prime is 165161021. The reversal of 165161002 is 200161561.

It can be written as a sum of positive squares in 2 ways, for example, as 113018161 + 52142841 = 10631^2 + 7221^2 .

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

It is an unprimeable number.

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, 1203 + ... + 18214.

Almost surely, 2^165161002 is an apocalyptic number.

165161002 is a deficient number, since it is larger than the sum of its proper divisors (82651514).

165161002 is a wasteful number, since it uses less digits than its factorization.

165161002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23672.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 165161002 is about 12851.4980449751. The cubic root of 165161002 is about 548.6589941842.

The spelling of 165161002 in words is "one hundred sixty-five million, one hundred sixty-one thousand, two".