315648919 has 8 divisors (see below), whose sum is σ = 333329840. Its totient is φ = 298074816.

The previous prime is 315648869. The next prime is 315648923. The reversal of 315648919 is 919846513.

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 315648919 - 2¹⁷ = 315517847 is a prime.

It is a super-2 number, since 2×315648919² = 199268480131737122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315648929) 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, 20592 + ... + 32485.

It is an arithmetic number, because the mean of its divisors is an integer number (41666230).

Almost surely, 2^315648919 is an apocalyptic number.

315648919 is the 10258-th hex number.

315648919 is a deficient number, since it is larger than the sum of its proper divisors (17680921).

315648919 is a wasteful number, since it uses less digits than its factorization.

315648919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53409.

The product of its digits is 233280, while the sum is 46.

The square root of 315648919 is about 17766.5111656735. The cubic root of 315648919 is about 680.8761191282.

The spelling of 315648919 in words is "three hundred fifteen million, six hundred forty-eight thousand, nine hundred nineteen".