168964919 has 2 divisors, whose sum is σ = 168964920. Its totient is φ = 168964918.

The previous prime is 168964889. The next prime is 168964927. The reversal of 168964919 is 919469861.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168964919 - 2²⁴ = 152187703 is a prime.

It is a super-2 number, since 2×168964919² = 57098287705353122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168964949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84482459 + 84482460.

It is an arithmetic number, because the mean of its divisors is an integer number (84482460).

Almost surely, 2^168964919 is an apocalyptic number.

168964919 is a deficient number, since it is larger than the sum of its proper divisors (1).

168964919 is an equidigital number, since it uses as much as digits as its factorization.

168964919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 53.

The square root of 168964919 is about 12998.6506607417. The cubic root of 168964919 is about 552.8392233065.

The spelling of 168964919 in words is "one hundred sixty-eight million, nine hundred sixty-four thousand, nine hundred nineteen".