38689781500 has 96 divisors (see below), whose sum is σ = 90730523520. Its totient is φ = 14360192000.

The previous prime is 38689781489. The next prime is 38689781521. The reversal of 38689781500 is 518798683.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 571446 + ... + 635554.

It is an arithmetic number, because the mean of its divisors is an integer number (945109620).

Almost surely, 2^38689781500 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 38689781500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45365261760).

38689781500 is an abundant number, since it is smaller than the sum of its proper divisors (52040742020).

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

38689781500 is a wasteful number, since it uses less digits than its factorization.

38689781500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64216 (or 64204 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 38689781500 in words is "thirty-eight billion, six hundred eighty-nine million, seven hundred eighty-one thousand, five hundred".