1982733680 has 40 divisors (see below), whose sum is σ = 4678672272. Its totient is φ = 781254144.

The previous prime is 1982733679. The next prime is 1982733707. The reversal of 1982733680 is 863372891.

It is a tau number, because it is divible by the number of its divisors (40).

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, 179597 + ... + 190316.

Almost surely, 2^1982733680 is an apocalyptic number.

1982733680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1982733680 is an abundant number, since it is smaller than the sum of its proper divisors (2695938592).

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

1982733680 is a wasteful number, since it uses less digits than its factorization.

1982733680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369993 (or 369987 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 1982733680 is about 44527.8977720709. The cubic root of 1982733680 is about 1256.2848658096.

The spelling of 1982733680 in words is "one billion, nine hundred eighty-two million, seven hundred thirty-three thousand, six hundred eighty".