812138950 has 24 divisors (see below), whose sum is σ = 1726376112. Its totient is φ = 278447520.

The previous prime is 812138941. The next prime is 812139007. The reversal of 812138950 is 59831218.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1159849 + ... + 1160548.

It is an arithmetic number, because the mean of its divisors is an integer number (71932338).

Almost surely, 2^812138950 is an apocalyptic number.

812138950 is an abundant number, since it is smaller than the sum of its proper divisors (914237162).

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

812138950 is a wasteful number, since it uses less digits than its factorization.

812138950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320416 (or 2320411 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 812138950 is about 28498.0516877909. The cubic root of 812138950 is about 932.9895509667.

The spelling of 812138950 in words is "eight hundred twelve million, one hundred thirty-eight thousand, nine hundred fifty".