130806791 has 4 divisors (see below), whose sum is σ = 135317400. Its totient is φ = 126296184.

The previous prime is 130806787. The next prime is 130806821. The reversal of 130806791 is 197608031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130806791 - 2² = 130806787 is a prime.

It is a super-2 number, since 2×130806791² = 34220833143435362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130806191) 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, 2255261 + ... + 2255318.

It is an arithmetic number, because the mean of its divisors is an integer number (33829350).

Almost surely, 2^130806791 is an apocalyptic number.

130806791 is a deficient number, since it is larger than the sum of its proper divisors (4510609).

130806791 is an equidigital number, since it uses as much as digits as its factorization.

130806791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510608.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 130806791 is about 11437.0796534780. The cubic root of 130806791 is about 507.6255002783.

The spelling of 130806791 in words is "one hundred thirty million, eight hundred six thousand, seven hundred ninety-one".