1989227924 has 12 divisors (see below), whose sum is σ = 3508560384. Its totient is φ = 986782104.

The previous prime is 1989227909. The next prime is 1989227941. The reversal of 1989227924 is 4297229891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1957394 + ... + 1958409.

It is an arithmetic number, because the mean of its divisors is an integer number (292380032).

Almost surely, 2^1989227924 is an apocalyptic number.

It is an amenable number.

1989227924 is a deficient number, since it is larger than the sum of its proper divisors (1519332460).

1989227924 is a wasteful number, since it uses less digits than its factorization.

1989227924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3915934 (or 3915932 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 53.

The square root of 1989227924 is about 44600.7614733202. The cubic root of 1989227924 is about 1257.6549824199.

The spelling of 1989227924 in words is "one billion, nine hundred eighty-nine million, two hundred twenty-seven thousand, nine hundred twenty-four".