812134902 has 16 divisors (see below), whose sum is σ = 1658829312. Its totient is φ = 264951720.

The previous prime is 812134891. The next prime is 812134903. The reversal of 812134902 is 209431218.

It is a self number, because there is not a number n which added to its sum of digits gives 812134902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812134903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1439674 + ... + 1440237.

It is an arithmetic number, because the mean of its divisors is an integer number (103676832).

Almost surely, 2^812134902 is an apocalyptic number.

812134902 is an abundant number, since it is smaller than the sum of its proper divisors (846694410).

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

812134902 is a wasteful number, since it uses less digits than its factorization.

812134902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879963.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 812134902 is about 28497.9806653033. The cubic root of 812134902 is about 932.9880008428.

The spelling of 812134902 in words is "eight hundred twelve million, one hundred thirty-four thousand, nine hundred two".