165274313 has 2 divisors, whose sum is σ = 165274314. Its totient is φ = 165274312.

The previous prime is 165274309. The next prime is 165274337. The reversal of 165274313 is 313472561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142730809 + 22543504 = 11947^2 + 4748^2 .

It is a cyclic number.

It is not a de Polignac number, because 165274313 - 2² = 165274309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165274313.

It is not a weakly prime, because it can be changed into another prime (165274363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82637156 + 82637157.

It is an arithmetic number, because the mean of its divisors is an integer number (82637157).

Almost surely, 2^165274313 is an apocalyptic number.

It is an amenable number.

165274313 is a deficient number, since it is larger than the sum of its proper divisors (1).

165274313 is an equidigital number, since it uses as much as digits as its factorization.

165274313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 32.

The square root of 165274313 is about 12855.9057635003. The cubic root of 165274313 is about 548.7844372097.

The spelling of 165274313 in words is "one hundred sixty-five million, two hundred seventy-four thousand, three hundred thirteen".