1983777972 has 24 divisors (see below), whose sum is σ = 5049616992. Its totient is φ = 601144800.

The previous prime is 1983777869. The next prime is 1983778007. The reversal of 1983777972 is 2797773891.

It is a congruent number.

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, 7514179 + ... + 7514442.

It is an arithmetic number, because the mean of its divisors is an integer number (210400708).

Almost surely, 2^1983777972 is an apocalyptic number.

1983777972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1983777972 is an abundant number, since it is smaller than the sum of its proper divisors (3065839020).

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

1983777972 is a wasteful number, since it uses less digits than its factorization.

1983777972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15028639 (or 15028637 counting only the distinct ones).

The product of its digits is 9335088, while the sum is 60.

The square root of 1983777972 is about 44539.6224950324. The cubic root of 1983777972 is about 1256.5053859241.

The spelling of 1983777972 in words is "one billion, nine hundred eighty-three million, seven hundred seventy-seven thousand, nine hundred seventy-two".