1938887272 has 48 divisors (see below), whose sum is σ = 4292127360. Its totient is φ = 818538336.

The previous prime is 1938887267. The next prime is 1938887273. The reversal of 1938887272 is 2727888391.

It is not an unprimeable number, because it can be changed into a prime (1938887273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10648 + ... + 63175.

It is an arithmetic number, because the mean of its divisors is an integer number (89419320).

Almost surely, 2^1938887272 is an apocalyptic number.

It is an amenable number.

1938887272 is an abundant number, since it is smaller than the sum of its proper divisors (2353240088).

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

1938887272 is a wasteful number, since it uses less digits than its factorization.

1938887272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73910 (or 73899 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 55.

The square root of 1938887272 is about 44032.7976853618. The cubic root of 1938887272 is about 1246.9552074392.

The spelling of 1938887272 in words is "one billion, nine hundred thirty-eight million, eight hundred eighty-seven thousand, two hundred seventy-two".