812349902 has 64 divisors (see below), whose sum is σ = 1585543680. Its totient is φ = 303129216.

The previous prime is 812349893. The next prime is 812349907. The reversal of 812349902 is 209943218.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812349907) 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 31 ways as a sum of consecutive naturals, for example, 1199588 + ... + 1200264.

It is an arithmetic number, because the mean of its divisors is an integer number (24774120).

Almost surely, 2^812349902 is an apocalyptic number.

812349902 is a deficient number, since it is larger than the sum of its proper divisors (773193778).

812349902 is a wasteful number, since it uses less digits than its factorization.

812349902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 812349902 is about 28501.7526127780. The cubic root of 812349902 is about 933.0703249005.

The spelling of 812349902 in words is "eight hundred twelve million, three hundred forty-nine thousand, nine hundred two".