130815865 has 8 divisors (see below), whose sum is σ = 157261248. Its totient is φ = 104464560.

The previous prime is 130815859. The next prime is 130815869. The reversal of 130815865 is 568518031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 130815865 - 2⁹ = 130815353 is a prime.

It is a super-2 number, since 2×130815865² = 34225581071396450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130815869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20421 + ... + 26050.

It is an arithmetic number, because the mean of its divisors is an integer number (19657656).

Almost surely, 2^130815865 is an apocalyptic number.

It is an amenable number.

130815865 is a deficient number, since it is larger than the sum of its proper divisors (26445383).

130815865 is an equidigital number, since it uses as much as digits as its factorization.

130815865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47039.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 130815865 is about 11437.4763387733. The cubic root of 130815865 is about 507.6372379138.

The spelling of 130815865 in words is "one hundred thirty million, eight hundred fifteen thousand, eight hundred sixty-five".