38969918464 has 99 divisors (see below), whose sum is σ = 80902338471. Its totient is φ = 18761656320.

The previous prime is 38969918459. The next prime is 38969918501. The reversal of 38969918464 is 46481996983.

The square root of 38969918464 is 197408.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38969918464.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 195828637 + ... + 195828835.

Almost surely, 2^38969918464 is an apocalyptic number.

38969918464 is the 197408-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38969918464

38969918464 is an abundant number, since it is smaller than the sum of its proper divisors (41932420007).

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

38969918464 is an frugal number, since it uses more digits than its factorization.

38969918464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 232 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 67.

The spelling of 38969918464 in words is "thirty-eight billion, nine hundred sixty-nine million, nine hundred eighteen thousand, four hundred sixty-four".