632813884389 has 6 divisors (see below), whose sum is σ = 914064499686. Its totient is φ = 421875922920.

The previous prime is 632813884387. The next prime is 632813884421. The reversal of 632813884389 is 983488318236.

632813884389 is a `hidden beast` number, since 63 + 2 + 8 + 138 + 8 + 438 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 346008650625 + 286805233764 = 588225^2 + 535542^2 .

It is not a de Polignac number, because 632813884389 - 2¹ = 632813884387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (632813884387) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35156326902 + ... + 35156326919.

It is an arithmetic number, because the mean of its divisors is an integer number (152344083281).

Almost surely, 2^632813884389 is an apocalyptic number.

It is an amenable number.

632813884389 is a deficient number, since it is larger than the sum of its proper divisors (281250615297).

632813884389 is a wasteful number, since it uses less digits than its factorization.

632813884389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70312653827 (or 70312653824 counting only the distinct ones).

The product of its digits is 47775744, while the sum is 63.

The spelling of 632813884389 in words is "six hundred thirty-two billion, eight hundred thirteen million, eight hundred eighty-four thousand, three hundred eighty-nine".