1983347408 has 80 divisors (see below), whose sum is σ = 4706722560. Its totient is φ = 791036928.

The previous prime is 1983347393. The next prime is 1983347507. The reversal of 1983347408 is 8047433891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84908 + ... + 105716.

It is an arithmetic number, because the mean of its divisors is an integer number (58834032).

Almost surely, 2^1983347408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1983347408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2353361280).

1983347408 is an abundant number, since it is smaller than the sum of its proper divisors (2723375152).

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

1983347408 is a wasteful number, since it uses less digits than its factorization.

1983347408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20884 (or 20878 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 1983347408 is about 44534.7887386928. The cubic root of 1983347408 is about 1256.4144743507.

The spelling of 1983347408 in words is "one billion, nine hundred eighty-three million, three hundred forty-seven thousand, four hundred eight".