8197158904 has 128 divisors (see below), whose sum is σ = 18029952000. Its totient is φ = 3454617600.

The previous prime is 8197158887. The next prime is 8197158913. The reversal of 8197158904 is 4098517918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29171244 + ... + 29171524.

It is an arithmetic number, because the mean of its divisors is an integer number (140859000).

Almost surely, 2^8197158904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8197158904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9014976000).

8197158904 is an abundant number, since it is smaller than the sum of its proper divisors (9832793096).

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

8197158904 is a wasteful number, since it uses less digits than its factorization.

8197158904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 52.

The square root of 8197158904 is about 90538.1626939712. The cubic root of 8197158904 is about 2016.2967558607.

The spelling of 8197158904 in words is "eight billion, one hundred ninety-seven million, one hundred fifty-eight thousand, nine hundred four".