813413769 has 48 divisors (see below), whose sum is σ = 1336262400. Its totient is φ = 437615136.

The previous prime is 813413761. The next prime is 813413789. The reversal of 813413769 is 967314318.

It is not a de Polignac number, because 813413769 - 2³ = 813413761 is a prime.

It is a super-2 number, since 2×813413769² = 1323283919197570722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 813413769.

It is not an unprimeable number, because it can be changed into a prime (813413761) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 499134 + ... + 500760.

It is an arithmetic number, because the mean of its divisors is an integer number (27838800).

Almost surely, 2^813413769 is an apocalyptic number.

It is an amenable number.

813413769 is a deficient number, since it is larger than the sum of its proper divisors (522848631).

813413769 is a wasteful number, since it uses less digits than its factorization.

813413769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842 (or 1835 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 813413769 is about 28520.4096920083. The cubic root of 813413769 is about 933.4774687121.

The spelling of 813413769 in words is "eight hundred thirteen million, four hundred thirteen thousand, seven hundred sixty-nine".