315161489 has 2 divisors, whose sum is σ = 315161490. Its totient is φ = 315161488.

The previous prime is 315161477. The next prime is 315161533. The reversal of 315161489 is 984161513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209236225 + 105925264 = 14465^2 + 10292^2 .

It is a cyclic number.

It is not a de Polignac number, because 315161489 - 2¹⁶ = 315095953 is a prime.

It is not a weakly prime, because it can be changed into another prime (315161689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157580744 + 157580745.

It is an arithmetic number, because the mean of its divisors is an integer number (157580745).

Almost surely, 2^315161489 is an apocalyptic number.

It is an amenable number.

315161489 is a deficient number, since it is larger than the sum of its proper divisors (1).

315161489 is an equidigital number, since it uses as much as digits as its factorization.

315161489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 315161489 is about 17752.7882035471. The cubic root of 315161489 is about 680.5254653854.

The spelling of 315161489 in words is "three hundred fifteen million, one hundred sixty-one thousand, four hundred eighty-nine".