813862364 has 36 divisors (see below), whose sum is σ = 1659568680. Its totient is φ = 348213600.

The previous prime is 813862363. The next prime is 813862373. The reversal of 813862364 is 463268318.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813862363) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 126014 + ... + 132314.

It is an arithmetic number, because the mean of its divisors is an integer number (46099130).

Almost surely, 2^813862364 is an apocalyptic number.

It is an amenable number.

813862364 is an abundant number, since it is smaller than the sum of its proper divisors (845706316).

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

813862364 is a wasteful number, since it uses less digits than its factorization.

813862364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6978 (or 6969 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 813862364 is about 28528.2730637520. The cubic root of 813862364 is about 933.6490404199.

The spelling of 813862364 in words is "eight hundred thirteen million, eight hundred sixty-two thousand, three hundred sixty-four".