813597385 has 16 divisors (see below), whose sum is σ = 1034026560. Its totient is φ = 612826560.

The previous prime is 813597361. The next prime is 813597391. The reversal of 813597385 is 583795318.

It is not a de Polignac number, because 813597385 - 2⁹ = 813596873 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10786 + ... + 41755.

It is an arithmetic number, because the mean of its divisors is an integer number (64626660).

Almost surely, 2^813597385 is an apocalyptic number.

It is an amenable number.

813597385 is a deficient number, since it is larger than the sum of its proper divisors (220429175).

813597385 is a wasteful number, since it uses less digits than its factorization.

813597385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52728.

The product of its digits is 907200, while the sum is 49.

The square root of 813597385 is about 28523.6285384591. The cubic root of 813597385 is about 933.5477029562.

The spelling of 813597385 in words is "eight hundred thirteen million, five hundred ninety-seven thousand, three hundred eighty-five".