634243832874 has 24 divisors (see below), whose sum is σ = 1381170587940. Its totient is φ = 210341439168.

The previous prime is 634243832701. The next prime is 634243832891. The reversal of 634243832874 is 478238342436.

634243832874 is a `hidden beast` number, since 6 + 3 + 4 + 243 + 8 + 328 + 74 = 666.

634243832874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 610437503025 + 23806329849 = 781305^2 + 154293^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 634243832874.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89427339 + ... + 89434430.

Almost surely, 2^634243832874 is an apocalyptic number.

634243832874 is an abundant number, since it is smaller than the sum of its proper divisors (746926755066).

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

634243832874 is a wasteful number, since it uses less digits than its factorization.

634243832874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178861974 (or 178861971 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 54.

The spelling of 634243832874 in words is "six hundred thirty-four billion, two hundred forty-three million, eight hundred thirty-two thousand, eight hundred seventy-four".