6315139470 has 64 divisors (see below), whose sum is σ = 15817965120. Its totient is φ = 1611552768.

The previous prime is 6315139451. The next prime is 6315139477. The reversal of 6315139470 is 749315136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6315139477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66192 + ... + 130428.

It is an arithmetic number, because the mean of its divisors is an integer number (247155705).

Almost surely, 2^6315139470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6315139470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7908982560).

6315139470 is an abundant number, since it is smaller than the sum of its proper divisors (9502825650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6315139470 is a wasteful number, since it uses less digits than its factorization.

6315139470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64389.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 6315139470 is about 79467.8518018450. The cubic root of 6315139470 is about 1848.3930013716.

The spelling of 6315139470 in words is "six billion, three hundred fifteen million, one hundred thirty-nine thousand, four hundred seventy".