394622634580 has 12 divisors (see below), whose sum is σ = 828707532660. Its totient is φ = 157849053824.

The previous prime is 394622634557. The next prime is 394622634599. The reversal of 394622634580 is 85436226493.

It can be written as a sum of positive squares in 2 ways, for example, as 268104412944 + 126518221636 = 517788^2 + 355694^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9865565845 + ... + 9865565884.

It is an arithmetic number, because the mean of its divisors is an integer number (69058961055).

Almost surely, 2^394622634580 is an apocalyptic number.

It is an amenable number.

394622634580 is an abundant number, since it is smaller than the sum of its proper divisors (434084898080).

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

394622634580 is a wasteful number, since it uses less digits than its factorization.

394622634580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19731131738 (or 19731131736 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 52.

The spelling of 394622634580 in words is "three hundred ninety-four billion, six hundred twenty-two million, six hundred thirty-four thousand, five hundred eighty".