638493224334 has 48 divisors (see below), whose sum is σ = 1485610243200. Its totient is φ = 182409908016.

The previous prime is 638493224321. The next prime is 638493224359. The reversal of 638493224334 is 433422394836.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3310447 + ... + 3498005.

It is an arithmetic number, because the mean of its divisors is an integer number (30950213400).

Almost surely, 2^638493224334 is an apocalyptic number.

638493224334 is an abundant number, since it is smaller than the sum of its proper divisors (847117018866).

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

638493224334 is a wasteful number, since it uses less digits than its factorization.

638493224334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199157 (or 199150 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 51.

The spelling of 638493224334 in words is "six hundred thirty-eight billion, four hundred ninety-three million, two hundred twenty-four thousand, three hundred thirty-four".