1938881072080 has 40 divisors (see below), whose sum is σ = 4508118995400. Its totient is φ = 775514492928.

The previous prime is 1938881072059. The next prime is 1938881072131. The reversal of 1938881072080 is 802701888391.

It can be written as a sum of positive squares in 4 ways, for example, as 62002992016 + 1876878080064 = 249004^2 + 1369992^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1082376 + ... + 2247064.

It is an arithmetic number, because the mean of its divisors is an integer number (112702974885).

Almost surely, 2^{1938881072080} is an apocalyptic number.

1938881072080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1938881072080 is an abundant number, since it is smaller than the sum of its proper divisors (2569237923320).

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

1938881072080 is a wasteful number, since it uses less digits than its factorization.

1938881072080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185511 (or 1185505 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 55.

The spelling of 1938881072080 in words is "one trillion, nine hundred thirty-eight billion, eight hundred eighty-one million, seventy-two thousand, eighty".