38197187500 has 48 divisors (see below), whose sum is σ = 83556817344. Its totient is φ = 15278750000.

The previous prime is 38197187489. The next prime is 38197187519. The reversal of 38197187500 is 578179183.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251385 + ... + 373615.

It is an arithmetic number, because the mean of its divisors is an integer number (1740767028).

Almost surely, 2^38197187500 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 38197187500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41778408672).

38197187500 is an abundant number, since it is smaller than the sum of its proper divisors (45359629844).

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

38197187500 is an frugal number, since it uses more digits than its factorization.

38197187500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122270 (or 122238 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 49.

The spelling of 38197187500 in words is "thirty-eight billion, one hundred ninety-seven million, one hundred eighty-seven thousand, five hundred".