1938898944 has 180 divisors, whose sum is σ = 5820467744. Its totient is φ = 644972544.

The previous prime is 1938898933. The next prime is 1938898961. The reversal of 1938898944 is 4498988391.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3981069 + ... + 3981555.

Almost surely, 2^1938898944 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 1938898944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2910233872).

1938898944 is an abundant number, since it is smaller than the sum of its proper divisors (3881568800).

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

1938898944 is an frugal number, since it uses more digits than its factorization.

1938898944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 492 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 63.

The square root of 1938898944 is about 44032.9302227322. The cubic root of 1938898944 is about 1246.9577096358.

The spelling of 1938898944 in words is "one billion, nine hundred thirty-eight million, eight hundred ninety-eight thousand, nine hundred forty-four".