38491138600 has 96 divisors (see below), whose sum is σ = 94322088000. Its totient is φ = 14567523840.

The previous prime is 38491138597. The next prime is 38491138613. The reversal of 38491138600 is 683119483.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3182164 + ... + 3194236.

It is an arithmetic number, because the mean of its divisors is an integer number (982521750).

Almost surely, 2^38491138600 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38491138600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47161044000).

38491138600 is an abundant number, since it is smaller than the sum of its proper divisors (55830949400).

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

38491138600 is a wasteful number, since it uses less digits than its factorization.

38491138600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12947 (or 12938 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 38491138600 in words is "thirty-eight billion, four hundred ninety-one million, one hundred thirty-eight thousand, six hundred".