1992871244 has 24 divisors (see below), whose sum is σ = 4292338848. Its totient is φ = 788388480.

The previous prime is 1992871219. The next prime is 1992871267. The reversal of 1992871244 is 4421782991.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

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, 2737097 + ... + 2737824.

It is an arithmetic number, because the mean of its divisors is an integer number (178847452).

Almost surely, 2^1992871244 is an apocalyptic number.

1992871244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1992871244 is an abundant number, since it is smaller than the sum of its proper divisors (2299467604).

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

1992871244 is a wasteful number, since it uses less digits than its factorization.

1992871244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5474945 (or 5474943 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 1992871244 is about 44641.5864861454. The cubic root of 1992871244 is about 1258.4223228480.

The spelling of 1992871244 in words is "one billion, nine hundred ninety-two million, eight hundred seventy-one thousand, two hundred forty-four".