812678914 has 12 divisors (see below), whose sum is σ = 1290989394. Its totient is φ = 382358912.

The previous prime is 812678899. The next prime is 812678953. The reversal of 812678914 is 419876218.

It can be written as a sum of positive squares in 3 ways, for example, as 811395225 + 1283689 = 28485^2 + 1133^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 163782 + ... + 168670.

Almost surely, 2^812678914 is an apocalyptic number.

812678914 is a deficient number, since it is larger than the sum of its proper divisors (478310480).

812678914 is an frugal number, since it uses more digits than its factorization.

812678914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9797 (or 4908 counting only the distinct ones).

The product of its digits is 193536, while the sum is 46.

The square root of 812678914 is about 28507.5238138987. The cubic root of 812678914 is about 933.1962763315.

The spelling of 812678914 in words is "eight hundred twelve million, six hundred seventy-eight thousand, nine hundred fourteen".