166315459 has 2 divisors, whose sum is σ = 166315460. Its totient is φ = 166315458.

The previous prime is 166315447. The next prime is 166315519. The reversal of 166315459 is 954513661.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166315459 - 2⁵ = 166315427 is a prime.

It is not a weakly prime, because it can be changed into another prime (166315859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83157729 + 83157730.

It is an arithmetic number, because the mean of its divisors is an integer number (83157730).

Almost surely, 2^166315459 is an apocalyptic number.

166315459 is a deficient number, since it is larger than the sum of its proper divisors (1).

166315459 is an equidigital number, since it uses as much as digits as its factorization.

166315459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 40.

The square root of 166315459 is about 12896.3350995544. The cubic root of 166315459 is about 549.9343822544.

The spelling of 166315459 in words is "one hundred sixty-six million, three hundred fifteen thousand, four hundred fifty-nine".