810538491002 has 32 divisors (see below), whose sum is σ = 1262235214800. Its totient is φ = 389895159808.

The previous prime is 810538490981. The next prime is 810538491017. The reversal of 810538491002 is 200194835018.

It can be written as a sum of positive squares in 8 ways, for example, as 1476019561 + 809062471441 = 38419^2 + 899479^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28833818 + ... + 28861914.

Almost surely, 2^810538491002 is an apocalyptic number.

810538491002 is a deficient number, since it is larger than the sum of its proper divisors (451696723798).

810538491002 is a wasteful number, since it uses less digits than its factorization.

810538491002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29890.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 810538491002 in words is "eight hundred ten billion, five hundred thirty-eight million, four hundred ninety-one thousand, two".