813146783 has 4 divisors (see below), whose sum is σ = 817404288. Its totient is φ = 808889280.

The previous prime is 813146779. The next prime is 813146797. The reversal of 813146783 is 387641318.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 813146783 - 2² = 813146779 is a prime.

It is a super-2 number, since 2×813146783² = 1322415381406498178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 813146783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813146183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2128466 + ... + 2128847.

It is an arithmetic number, because the mean of its divisors is an integer number (204351072).

Almost surely, 2^813146783 is an apocalyptic number.

813146783 is a deficient number, since it is larger than the sum of its proper divisors (4257505).

813146783 is a wasteful number, since it uses less digits than its factorization.

813146783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4257504.

The product of its digits is 96768, while the sum is 41.

The square root of 813146783 is about 28515.7286948800. The cubic root of 813146783 is about 933.3753260726.

The spelling of 813146783 in words is "eight hundred thirteen million, one hundred forty-six thousand, seven hundred eighty-three".