812993263 has 8 divisors (see below), whose sum is σ = 832815360. Its totient is φ = 793276440.

The previous prime is 812993249. The next prime is 812993287. The reversal of 812993263 is 362399218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 812993263 - 2⁵ = 812993231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812993243) 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 7 ways as a sum of consecutive naturals, for example, 10573 + ... + 41686.

It is an arithmetic number, because the mean of its divisors is an integer number (104101920).

Almost surely, 2^812993263 is an apocalyptic number.

812993263 is a deficient number, since it is larger than the sum of its proper divisors (19822097).

812993263 is a wasteful number, since it uses less digits than its factorization.

812993263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52637.

The product of its digits is 139968, while the sum is 43.

The square root of 812993263 is about 28513.0367200689. The cubic root of 812993263 is about 933.3165827634.

The spelling of 812993263 in words is "eight hundred twelve million, nine hundred ninety-three thousand, two hundred sixty-three".