813747478 has 16 divisors (see below), whose sum is σ = 1250194176. Its totient is φ = 397096960.

The previous prime is 813747469. The next prime is 813747481. The reversal of 813747478 is 874747318.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 150 + ... + 40342.

It is an arithmetic number, because the mean of its divisors is an integer number (78137136).

Almost surely, 2^813747478 is an apocalyptic number.

813747478 is a deficient number, since it is larger than the sum of its proper divisors (436446698).

813747478 is a wasteful number, since it uses less digits than its factorization.

813747478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40439.

The product of its digits is 1053696, while the sum is 49.

The square root of 813747478 is about 28526.2594463417. The cubic root of 813747478 is about 933.6051065985.

The spelling of 813747478 in words is "eight hundred thirteen million, seven hundred forty-seven thousand, four hundred seventy-eight".