1983963964 has 12 divisors (see below), whose sum is σ = 3654670600. Its totient is φ = 939772368.

The previous prime is 1983963931. The next prime is 1983963973. The reversal of 1983963964 is 4693693891.

It is a super-2 number, since 2×1983963964² = 7872226020901186592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1983963899 and 1983963908.

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, 13052319 + ... + 13052470.

Almost surely, 2^1983963964 is an apocalyptic number.

It is an amenable number.

1983963964 is a deficient number, since it is larger than the sum of its proper divisors (1670706636).

1983963964 is a wasteful number, since it uses less digits than its factorization.

1983963964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26104812 (or 26104810 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 58.

The square root of 1983963964 is about 44541.7103847618. The cubic root of 1983963964 is about 1256.5446531959.

The spelling of 1983963964 in words is "one billion, nine hundred eighty-three million, nine hundred sixty-three thousand, nine hundred sixty-four".