168330493 has 2 divisors, whose sum is σ = 168330494. Its totient is φ = 168330492.

The previous prime is 168330479. The next prime is 168330511. The reversal of 168330493 is 394033861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164788569 + 3541924 = 12837^2 + 1882^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168330493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168330193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84165246 + 84165247.

It is an arithmetic number, because the mean of its divisors is an integer number (84165247).

Almost surely, 2^168330493 is an apocalyptic number.

It is an amenable number.

168330493 is a deficient number, since it is larger than the sum of its proper divisors (1).

168330493 is an equidigital number, since it uses as much as digits as its factorization.

168330493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 168330493 is about 12974.2241771907. The cubic root of 168330493 is about 552.1464257021.

The spelling of 168330493 in words is "one hundred sixty-eight million, three hundred thirty thousand, four hundred ninety-three".