8109137504 has 24 divisors (see below), whose sum is σ = 17192931840. Its totient is φ = 3742678656.

The previous prime is 8109137497. The next prime is 8109137507. The reversal of 8109137504 is 4057319018.

It is a super-2 number, since 2×8109137504² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8109137507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9746144 + ... + 9746975.

It is an arithmetic number, because the mean of its divisors is an integer number (716372160).

Almost surely, 2^8109137504 is an apocalyptic number.

It is an amenable number.

8109137504 is an abundant number, since it is smaller than the sum of its proper divisors (9083794336).

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

8109137504 is a wasteful number, since it uses less digits than its factorization.

8109137504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19493142 (or 19493134 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 8109137504 is about 90050.7496026546. The cubic root of 8109137504 is about 2009.0537450058.

The spelling of 8109137504 in words is "eight billion, one hundred nine million, one hundred thirty-seven thousand, five hundred four".