315590749 has 2 divisors, whose sum is σ = 315590750. Its totient is φ = 315590748.

The previous prime is 315590747. The next prime is 315590767. The reversal of 315590749 is 947095513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228765625 + 86825124 = 15125^2 + 9318^2 .

It is a cyclic number.

It is not a de Polignac number, because 315590749 - 2¹ = 315590747 is a prime.

Together with 315590747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315590747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157795374 + 157795375.

It is an arithmetic number, because the mean of its divisors is an integer number (157795375).

Almost surely, 2^315590749 is an apocalyptic number.

It is an amenable number.

315590749 is a deficient number, since it is larger than the sum of its proper divisors (1).

315590749 is an equidigital number, since it uses as much as digits as its factorization.

315590749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 315590749 is about 17764.8740215066. The cubic root of 315590749 is about 680.8342910140.

The spelling of 315590749 in words is "three hundred fifteen million, five hundred ninety thousand, seven hundred forty-nine".