8493187857 has 32 divisors (see below), whose sum is σ = 14123289600. Its totient is φ = 4410563520.

The previous prime is 8493187837. The next prime is 8493187909. The reversal of 8493187857 is 7587813948.

It is not a de Polignac number, because 8493187857 - 2⁶ = 8493187793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8493187857.

It is not an unprimeable number, because it can be changed into a prime (8493187837) 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, 1152019 + ... + 1159367.

It is an arithmetic number, because the mean of its divisors is an integer number (441352800).

Almost surely, 2^8493187857 is an apocalyptic number.

It is an amenable number.

8493187857 is a deficient number, since it is larger than the sum of its proper divisors (5630101743).

8493187857 is a wasteful number, since it uses less digits than its factorization.

8493187857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12373.

The product of its digits is 13547520, while the sum is 60.

The square root of 8493187857 is about 92158.4931354674. The cubic root of 8493187857 is about 2040.2822127352.

The spelling of 8493187857 in words is "eight billion, four hundred ninety-three million, one hundred eighty-seven thousand, eight hundred fifty-seven".