8315787493 has 16 divisors (see below), whose sum is σ = 8990638720. Its totient is φ = 7646031936.

The previous prime is 8315787461. The next prime is 8315787499. The reversal of 8315787493 is 3947875138.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8315787493 - 2⁵ = 8315787461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8315787499) 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, 4981663 + ... + 4983331.

It is an arithmetic number, because the mean of its divisors is an integer number (561914920).

Almost surely, 2^8315787493 is an apocalyptic number.

It is an amenable number.

8315787493 is a deficient number, since it is larger than the sum of its proper divisors (674851227).

8315787493 is a wasteful number, since it uses less digits than its factorization.

8315787493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2956.

The product of its digits is 5080320, while the sum is 55.

The square root of 8315787493 is about 91190.9397528066. The cubic root of 8315787493 is about 2025.9767674492.

The spelling of 8315787493 in words is "eight billion, three hundred fifteen million, seven hundred eighty-seven thousand, four hundred ninety-three".