6315515493 has 16 divisors (see below), whose sum is σ = 9630566400. Its totient is φ = 3606269616.

The previous prime is 6315515477. The next prime is 6315515509. The reversal of 6315515493 is 3945155136.

It is an interprime number because it is at equal distance from previous prime (6315515477) and next prime (6315515509).

It is not a de Polignac number, because 6315515493 - 2⁴ = 6315515477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6315515473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78105 + ... + 136862.

It is an arithmetic number, because the mean of its divisors is an integer number (601910400).

Almost surely, 2^6315515493 is an apocalyptic number.

It is an amenable number.

6315515493 is a deficient number, since it is larger than the sum of its proper divisors (3315050907).

6315515493 is a wasteful number, since it uses less digits than its factorization.

6315515493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216376.

The product of its digits is 243000, while the sum is 42.

The square root of 6315515493 is about 79470.2176478711. The cubic root of 6315515493 is about 1848.4296869951.

The spelling of 6315515493 in words is "six billion, three hundred fifteen million, five hundred fifteen thousand, four hundred ninety-three".