315644609 has 8 divisors (see below), whose sum is σ = 369535488. Its totient is φ = 263953440.

The previous prime is 315644603. The next prime is 315644611. The reversal of 315644609 is 906446513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 315644609 - 2⁸ = 315644353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (315644603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549617 + ... + 550190.

It is an arithmetic number, because the mean of its divisors is an integer number (46191936).

Almost surely, 2^315644609 is an apocalyptic number.

It is an amenable number.

315644609 is a deficient number, since it is larger than the sum of its proper divisors (53890879).

315644609 is a wasteful number, since it uses less digits than its factorization.

315644609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099855.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 315644609 is about 17766.3898696387. The cubic root of 315644609 is about 680.8730201267.

The spelling of 315644609 in words is "three hundred fifteen million, six hundred forty-four thousand, six hundred nine".