1938889068 has 12 divisors (see below), whose sum is σ = 4524074520. Its totient is φ = 646296352.

The previous prime is 1938889037. The next prime is 1938889097. The reversal of 1938889068 is 8609888391.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80787033 + ... + 80787056.

It is an arithmetic number, because the mean of its divisors is an integer number (377006210).

Almost surely, 2^1938889068 is an apocalyptic number.

It is an amenable number.

1938889068 is an abundant number, since it is smaller than the sum of its proper divisors (2585185452).

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

1938889068 is a wasteful number, since it uses less digits than its factorization.

1938889068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161574096 (or 161574094 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 60.

The square root of 1938889068 is about 44032.8180792463. The cubic root of 1938889068 is about 1246.9555924591.

The spelling of 1938889068 in words is "one billion, nine hundred thirty-eight million, eight hundred eighty-nine thousand, sixty-eight".