38151718388 has 48 divisors (see below), whose sum is σ = 78711400320. Its totient is φ = 15838644096.

The previous prime is 38151718387. The next prime is 38151718391. The reversal of 38151718388 is 88381715183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38151718387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154058 + ... + 316286.

It is an arithmetic number, because the mean of its divisors is an integer number (1639820840).

Almost surely, 2^38151718388 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 38151718388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39355700160).

38151718388 is an abundant number, since it is smaller than the sum of its proper divisors (40559681932).

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

38151718388 is a wasteful number, since it uses less digits than its factorization.

38151718388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162504 (or 162502 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 53.

The spelling of 38151718388 in words is "thirty-eight billion, one hundred fifty-one million, seven hundred eighteen thousand, three hundred eighty-eight".