2038391388 has 72 divisors (see below), whose sum is σ = 5643172080. Its totient is φ = 615260160.

The previous prime is 2038391351. The next prime is 2038391389. The reversal of 2038391388 is 8831938302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2038391389) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 91758 + ... + 111786.

It is an arithmetic number, because the mean of its divisors is an integer number (78377390).

Almost surely, 2^2038391388 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 2038391388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2821586040).

2038391388 is an abundant number, since it is smaller than the sum of its proper divisors (3604780692).

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

2038391388 is a wasteful number, since it uses less digits than its factorization.

2038391388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20307 (or 20302 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 2038391388 is about 45148.5480165199. The cubic root of 2038391388 is about 1267.9316961419.

The spelling of 2038391388 in words is "two billion, thirty-eight million, three hundred ninety-one thousand, three hundred eighty-eight".