38921849168 has 40 divisors (see below), whose sum is σ = 76635667176. Its totient is φ = 19146240000.

The previous prime is 38921849077. The next prime is 38921849173. The reversal of 38921849168 is 86194812983.

It can be written as a sum of positive squares in 4 ways, for example, as 20188999744 + 18732849424 = 142088^2 + 136868^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426818 + ... + 509918.

Almost surely, 2^38921849168 is an apocalyptic number.

It is an amenable number.

38921849168 is a deficient number, since it is larger than the sum of its proper divisors (37713818008).

38921849168 is a wasteful number, since it uses less digits than its factorization.

38921849168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83583 (or 83577 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 59.

The spelling of 38921849168 in words is "thirty-eight billion, nine hundred twenty-one million, eight hundred forty-nine thousand, one hundred sixty-eight".