168372613 has 2 divisors, whose sum is σ = 168372614. Its totient is φ = 168372612.

The previous prime is 168372593. The next prime is 168372653. The reversal of 168372613 is 316273861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116273089 + 52099524 = 10783^2 + 7218^2 .

It is an emirp because it is prime and its reverse (316273861) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168372613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168372653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84186306 + 84186307.

It is an arithmetic number, because the mean of its divisors is an integer number (84186307).

Almost surely, 2^168372613 is an apocalyptic number.

It is an amenable number.

168372613 is a deficient number, since it is larger than the sum of its proper divisors (1).

168372613 is an equidigital number, since it uses as much as digits as its factorization.

168372613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 168372613 is about 12975.8472941076. The cubic root of 168372613 is about 552.1924749305.

The spelling of 168372613 in words is "one hundred sixty-eight million, three hundred seventy-two thousand, six hundred thirteen".