1938892880 has 40 divisors (see below), whose sum is σ = 4603848192. Its totient is φ = 759054464.

The previous prime is 1938892877. The next prime is 1938892889. The reversal of 1938892880 is 882988391.

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

It is a super-2 number, since 2×1938892880² = 7518611200229388800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938892889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254072 + ... + 261591.

Almost surely, 2^1938892880 is an apocalyptic number.

1938892880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1938892880 is an abundant number, since it is smaller than the sum of its proper divisors (2664955312).

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

1938892880 is a wasteful number, since it uses less digits than its factorization.

1938892880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515723 (or 515717 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 56.

The square root of 1938892880 is about 44032.8613651214. The cubic root of 1938892880 is about 1246.9564096610.

The spelling of 1938892880 in words is "one billion, nine hundred thirty-eight million, eight hundred ninety-two thousand, eight hundred eighty".