38914663840 has 96 divisors (see below), whose sum is σ = 102422108880. Its totient is φ = 13873004544.

The previous prime is 38914663831. The next prime is 38914663871. The reversal of 38914663840 is 4836641983.

38914663840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2916432016 + 35998231824 = 54004^2 + 189732^2 .

It is a super-3 number, since 3×38914663840³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262249 + ... + 382888.

Almost surely, 2^38914663840 is an apocalyptic number.

It is an amenable number.

38914663840 is an abundant number, since it is smaller than the sum of its proper divisors (63507445040).

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

38914663840 is a wasteful number, since it uses less digits than its factorization.

38914663840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645194 (or 645186 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 52.

The spelling of 38914663840 in words is "thirty-eight billion, nine hundred fourteen million, six hundred sixty-three thousand, eight hundred forty".