815372994 has 8 divisors (see below), whose sum is σ = 1630746000. Its totient is φ = 271790996.

The previous prime is 815372941. The next prime is 815373001. The reversal of 815372994 is 499273518.

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

815372994 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 67947744 + ... + 67947755.

It is an arithmetic number, because the mean of its divisors is an integer number (203843250).

Almost surely, 2^815372994 is an apocalyptic number.

815372994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

815372994 is a wasteful number, since it uses less digits than its factorization.

815372994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135895504.

The product of its digits is 544320, while the sum is 48.

The square root of 815372994 is about 28554.7368049506. The cubic root of 815372994 is about 934.2263397217.

The spelling of 815372994 in words is "eight hundred fifteen million, three hundred seventy-two thousand, nine hundred ninety-four".