169173013 has 2 divisors, whose sum is σ = 169173014. Its totient is φ = 169173012.

The previous prime is 169172987. The next prime is 169173019. The reversal of 169173013 is 310371961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164429329 + 4743684 = 12823^2 + 2178^2 .

It is a cyclic number.

It is not a de Polignac number, because 169173013 - 2⁹ = 169172501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (169173019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84586506 + 84586507.

It is an arithmetic number, because the mean of its divisors is an integer number (84586507).

Almost surely, 2^169173013 is an apocalyptic number.

It is an amenable number.

169173013 is a deficient number, since it is larger than the sum of its proper divisors (1).

169173013 is an equidigital number, since it uses as much as digits as its factorization.

169173013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 169173013 is about 13006.6526439357. The cubic root of 169173013 is about 553.0660856442.

The spelling of 169173013 in words is "one hundred sixty-nine million, one hundred seventy-three thousand, thirteen".