8130136791 has 24 divisors (see below), whose sum is σ = 12816743664. Its totient is φ = 4569626880.

The previous prime is 8130136789. The next prime is 8130136871. The reversal of 8130136791 is 1976310318.

It is not a de Polignac number, because 8130136791 - 2¹ = 8130136789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8130136741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 444370 + ... + 462303.

It is an arithmetic number, because the mean of its divisors is an integer number (534030986).

Almost surely, 2^8130136791 is an apocalyptic number.

8130136791 is a deficient number, since it is larger than the sum of its proper divisors (4686606873).

8130136791 is a wasteful number, since it uses less digits than its factorization.

8130136791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906751 (or 906744 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 8130136791 is about 90167.2711741905. The cubic root of 8130136791 is about 2010.7864542047.

The spelling of 8130136791 in words is "eight billion, one hundred thirty million, one hundred thirty-six thousand, seven hundred ninety-one".