1983906512 has 40 divisors (see below), whose sum is σ = 4482600000. Its totient is φ = 850243296.

The previous prime is 1983906503. The next prime is 1983906557. The reversal of 1983906512 is 2156093891.

It is a happy number.

It is a super-2 number, since 2×1983906512² = 7871770096712012288, which contains 22 as substring.

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, 175262 + ... + 186237.

It is an arithmetic number, because the mean of its divisors is an integer number (112065000).

Almost surely, 2^1983906512 is an apocalyptic number.

It is an amenable number.

1983906512 is an abundant number, since it is smaller than the sum of its proper divisors (2498693488).

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

1983906512 is an equidigital number, since it uses as much as digits as its factorization.

1983906512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361528 (or 361508 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 1983906512 is about 44541.0654564976. The cubic root of 1983906512 is about 1256.5325239937.

The spelling of 1983906512 in words is "one billion, nine hundred eighty-three million, nine hundred six thousand, five hundred twelve".