1983969631 has 12 divisors (see below), whose sum is σ = 2274451312. Its totient is φ = 1695268224.

The previous prime is 1983969601. The next prime is 1983969653. The reversal of 1983969631 is 1369693891.

It is not a de Polignac number, because 1983969631 - 2¹⁷ = 1983838559 is a prime.

It is a super-2 number, since 2×1983969631² = 7872270993460552322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1983969601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1058311 + ... + 1060183.

Almost surely, 2^1983969631 is an apocalyptic number.

1983969631 is a deficient number, since it is larger than the sum of its proper divisors (290481681).

1983969631 is an frugal number, since it uses more digits than its factorization.

1983969631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658 (or 2269 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 55.

The square root of 1983969631 is about 44541.7739992470. The cubic root of 1983969631 is about 1256.5458495939.

The spelling of 1983969631 in words is "one billion, nine hundred eighty-three million, nine hundred sixty-nine thousand, six hundred thirty-one".