130809957 has 4 divisors (see below), whose sum is σ = 174413280. Its totient is φ = 87206636.

The previous prime is 130809949. The next prime is 130809983. The reversal of 130809957 is 759908031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 130809957 - 2³ = 130809949 is a prime.

It is a super-2 number, since 2×130809957² = 34222489700683698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130809997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21801657 + ... + 21801662.

It is an arithmetic number, because the mean of its divisors is an integer number (43603320).

Almost surely, 2^130809957 is an apocalyptic number.

It is an amenable number.

130809957 is a deficient number, since it is larger than the sum of its proper divisors (43603323).

130809957 is an equidigital number, since it uses as much as digits as its factorization.

130809957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43603322.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 130809957 is about 11437.2180620988. The cubic root of 130809957 is about 507.6295957063.

The spelling of 130809957 in words is "one hundred thirty million, eight hundred nine thousand, nine hundred fifty-seven".