8157898847 has 16 divisors (see below), whose sum is σ = 9523252992. Its totient is φ = 6843994560.

The previous prime is 8157898799. The next prime is 8157898883. The reversal of 8157898847 is 7488987518.

It is a cyclic number.

It is not a de Polignac number, because 8157898847 - 2¹² = 8157894751 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 (8157898547) 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, 6008 + ... + 127874.

It is an arithmetic number, because the mean of its divisors is an integer number (595203312).

Almost surely, 2^8157898847 is an apocalyptic number.

8157898847 is a deficient number, since it is larger than the sum of its proper divisors (1365354145).

8157898847 is a wasteful number, since it uses less digits than its factorization.

8157898847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122078.

The product of its digits is 36126720, while the sum is 65.

The square root of 8157898847 is about 90321.0874989889. The cubic root of 8157898847 is about 2013.0726045866.

The spelling of 8157898847 in words is "eight billion, one hundred fifty-seven million, eight hundred ninety-eight thousand, eight hundred forty-seven".