38820190388 has 48 divisors (see below), whose sum is σ = 78472437120. Its totient is φ = 16459879296.

The previous prime is 38820190307. The next prime is 38820190393. The reversal of 38820190388 is 88309102883.

It is a congruent number.

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, 967706 + ... + 1007022.

It is an arithmetic number, because the mean of its divisors is an integer number (1634842440).

Almost surely, 2^38820190388 is an apocalyptic number.

It is an amenable number.

38820190388 is an abundant number, since it is smaller than the sum of its proper divisors (39652246732).

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

38820190388 is a wasteful number, since it uses less digits than its factorization.

38820190388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39704 (or 39702 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 38820190388 in words is "thirty-eight billion, eight hundred twenty million, one hundred ninety thousand, three hundred eighty-eight".