8187916057 has 16 divisors (see below), whose sum is σ = 9006163200. Its totient is φ = 7409301760.

The previous prime is 8187916049. The next prime is 8187916067. The reversal of 8187916057 is 7506197818.

It is not a de Polignac number, because 8187916057 - 2³ = 8187916049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8187915995 and 8187916013.

It is not an unprimeable number, because it can be changed into a prime (8187916067) 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, 83082 + ... + 152572.

It is an arithmetic number, because the mean of its divisors is an integer number (562885200).

Almost surely, 2^8187916057 is an apocalyptic number.

It is an amenable number.

8187916057 is a deficient number, since it is larger than the sum of its proper divisors (818247143).

8187916057 is a wasteful number, since it uses less digits than its factorization.

8187916057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69776.

The product of its (nonzero) digits is 846720, while the sum is 52.

The square root of 8187916057 is about 90487.1043685231. The cubic root of 8187916057 is about 2015.5386341912.

The spelling of 8187916057 in words is "eight billion, one hundred eighty-seven million, nine hundred sixteen thousand, fifty-seven".