1881663982 has 32 divisors (see below), whose sum is σ = 3163346784. Its totient is φ = 839101120.

The previous prime is 1881663937. The next prime is 1881664007. The reversal of 1881663982 is 2893661881.

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, 134418 + ... + 147754.

It is an arithmetic number, because the mean of its divisors is an integer number (98854587).

Almost surely, 2^1881663982 is an apocalyptic number.

1881663982 is a deficient number, since it is larger than the sum of its proper divisors (1281682802).

1881663982 is a wasteful number, since it uses less digits than its factorization.

1881663982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13425 (or 13403 counting only the distinct ones).

The product of its digits is 995328, while the sum is 52.

The square root of 1881663982 is about 43378.1509748860. The cubic root of 1881663982 is about 1234.5651803471.

The spelling of 1881663982 in words is "one billion, eight hundred eighty-one million, six hundred sixty-three thousand, nine hundred eighty-two".