315448645 has 24 divisors (see below), whose sum is σ = 391851000. Its totient is φ = 243766656.

The previous prime is 315448613. The next prime is 315448687. The reversal of 315448645 is 546844513.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 39955041 + 275493604 = 6321^2 + 16598^2 .

It is not a de Polignac number, because 315448645 - 2⁵ = 315448613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 315448598 and 315448607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1377391 + ... + 1377619.

It is an arithmetic number, because the mean of its divisors is an integer number (16327125).

Almost surely, 2^315448645 is an apocalyptic number.

It is an amenable number.

315448645 is a deficient number, since it is larger than the sum of its proper divisors (76402355).

315448645 is a wasteful number, since it uses less digits than its factorization.

315448645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 426 counting only the distinct ones).

The product of its digits is 230400, while the sum is 40.

The square root of 315448645 is about 17760.8739931345. The cubic root of 315448645 is about 680.7320871298.

The spelling of 315448645 in words is "three hundred fifteen million, four hundred forty-eight thousand, six hundred forty-five".