165190613 has 6 divisors (see below), whose sum is σ = 192160566. Its totient is φ = 141591912.

The previous prime is 165190609. The next prime is 165190621. The reversal of 165190613 is 316091561.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 115304644 + 49885969 = 10738^2 + 7063^2 .

It is not a de Polignac number, because 165190613 - 2² = 165190609 is a prime.

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 165190613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165190603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1685570 + ... + 1685667.

It is an arithmetic number, because the mean of its divisors is an integer number (32026761).

Almost surely, 2^165190613 is an apocalyptic number.

It is an amenable number.

165190613 is a deficient number, since it is larger than the sum of its proper divisors (26969953).

165190613 is an equidigital number, since it uses as much as digits as its factorization.

165190613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371251 (or 3371244 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 165190613 is about 12852.6500380272. The cubic root of 165190613 is about 548.6917811223.

The spelling of 165190613 in words is "one hundred sixty-five million, one hundred ninety thousand, six hundred thirteen".