168995413 has 2 divisors, whose sum is σ = 168995414. Its totient is φ = 168995412.

The previous prime is 168995347. The next prime is 168995423. The reversal of 168995413 is 314599861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123810129 + 45185284 = 11127^2 + 6722^2 .

It is an emirp because it is prime and its reverse (314599861) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168995413 is a prime.

It is equal to p_9449965 and since 168995413 and 9449965 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168995423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84497706 + 84497707.

It is an arithmetic number, because the mean of its divisors is an integer number (84497707).

Almost surely, 2^168995413 is an apocalyptic number.

It is an amenable number.

168995413 is a deficient number, since it is larger than the sum of its proper divisors (1).

168995413 is an equidigital number, since it uses as much as digits as its factorization.

168995413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 46.

The square root of 168995413 is about 12999.8235757259. The cubic root of 168995413 is about 552.8724792536.

The spelling of 168995413 in words is "one hundred sixty-eight million, nine hundred ninety-five thousand, four hundred thirteen".