1892994444 has 72 divisors (see below), whose sum is σ = 5361200208. Its totient is φ = 558126720.

The previous prime is 1892994331. The next prime is 1892994451. The reversal of 1892994444 is 4444992981.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49947 + ... + 79250.

It is an arithmetic number, because the mean of its divisors is an integer number (74461114).

Almost surely, 2^1892994444 is an apocalyptic number.

It is an amenable number.

1892994444 is an abundant number, since it is smaller than the sum of its proper divisors (3468205764).

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

1892994444 is a wasteful number, since it uses less digits than its factorization.

1892994444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129255 (or 129250 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 1892994444 is about 43508.5559861506. Note that the first 3 decimals coincide. The cubic root of 1892994444 is about 1237.0382061465.

The spelling of 1892994444 in words is "one billion, eight hundred ninety-two million, nine hundred ninety-four thousand, four hundred forty-four".