1983606240 has 864 divisors, whose sum is σ = 8665628832. Its totient is φ = 378470400.

The previous prime is 1983606203. The next prime is 1983606259. The reversal of 1983606240 is 426063891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 48380620 + ... + 48380660.

It is an arithmetic number, because the mean of its divisors is an integer number (10029663).

Almost surely, 2^1983606240 is an apocalyptic number.

1983606240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1983606240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4332814416).

1983606240 is an abundant number, since it is smaller than the sum of its proper divisors (6682022592).

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

1983606240 is a wasteful number, since it uses less digits than its factorization.

1983606240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 1983606240 is about 44537.6945968244. The cubic root of 1983606240 is about 1256.4691270932.

The spelling of 1983606240 in words is "one billion, nine hundred eighty-three million, six hundred six thousand, two hundred forty".