315445000646 has 32 divisors (see below), whose sum is σ = 495792617472. Its totient is φ = 150377372640.

The previous prime is 315445000639. The next prime is 315445000649. The reversal of 315445000646 is 646000544513.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315445000649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 780425 + ... + 1113531.

It is an arithmetic number, because the mean of its divisors is an integer number (15493519296).

Almost surely, 2^315445000646 is an apocalyptic number.

315445000646 is a deficient number, since it is larger than the sum of its proper divisors (180347616826).

315445000646 is a wasteful number, since it uses less digits than its factorization.

315445000646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333404.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 315445000646 in words is "three hundred fifteen billion, four hundred forty-five million, six hundred forty-six", and thus it is an aban number.