165322613 has 8 divisors (see below), whose sum is σ = 166348728. Its totient is φ = 164300224.

The previous prime is 165322609. The next prime is 165322621. The reversal of 165322613 is 316223561.

It can be written as a sum of positive squares in 4 ways, for example, as 508369 + 164814244 = 713^2 + 12838^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 165322613 - 2² = 165322609 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 (165322673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162695 + ... + 163707.

It is an arithmetic number, because the mean of its divisors is an integer number (20793591).

Almost surely, 2^165322613 is an apocalyptic number.

It is an amenable number.

165322613 is a deficient number, since it is larger than the sum of its proper divisors (1026115).

165322613 is a wasteful number, since it uses less digits than its factorization.

165322613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863.

The product of its digits is 6480, while the sum is 29.

The square root of 165322613 is about 12857.7841403564. The cubic root of 165322613 is about 548.8378911841.

The spelling of 165322613 in words is "one hundred sixty-five million, three hundred twenty-two thousand, six hundred thirteen".