815491113 has 8 divisors (see below), whose sum is σ = 1095622176. Its totient is φ = 539510400.

The previous prime is 815491111. The next prime is 815491123. The reversal of 815491113 is 311194518.

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

It is not a de Polignac number, because 815491113 - 2¹ = 815491111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (815491111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037128 + ... + 1037913.

It is an arithmetic number, because the mean of its divisors is an integer number (136952772).

Almost surely, 2^815491113 is an apocalyptic number.

It is an amenable number.

815491113 is a deficient number, since it is larger than the sum of its proper divisors (280131063).

815491113 is a wasteful number, since it uses less digits than its factorization.

815491113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075175.

The product of its digits is 4320, while the sum is 33.

The square root of 815491113 is about 28556.8050208702. The cubic root of 815491113 is about 934.2714497731.

The spelling of 815491113 in words is "eight hundred fifteen million, four hundred ninety-one thousand, one hundred thirteen".