38168998864 has 20 divisors (see below), whose sum is σ = 73995459300. Its totient is φ = 19073396480.

The previous prime is 38168998771. The next prime is 38168998897. The reversal of 38168998864 is 46889986183.

It can be written as a sum of positive squares in 2 ways, for example, as 18031118400 + 20137880464 = 134280^2 + 141908^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38168998793 and 38168998802.

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, 665539 + ... + 720610.

It is an arithmetic number, because the mean of its divisors is an integer number (3699772965).

Almost surely, 2^38168998864 is an apocalyptic number.

It is an amenable number.

38168998864 is a deficient number, since it is larger than the sum of its proper divisors (35826460436).

38168998864 is a wasteful number, since it uses less digits than its factorization.

38168998864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387878 (or 1387872 counting only the distinct ones).

The product of its digits is 143327232, while the sum is 70.

The spelling of 38168998864 in words is "thirty-eight billion, one hundred sixty-eight million, nine hundred ninety-eight thousand, eight hundred sixty-four".