1980971829 has 16 divisors (see below), whose sum is σ = 2935679040. Its totient is φ = 1320240240.

The previous prime is 1980971819. The next prime is 1980971843. The reversal of 1980971829 is 9281790891.

It is not a de Polignac number, because 1980971829 - 2¹⁹ = 1980447541 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980971809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96394 + ... + 115124.

It is an arithmetic number, because the mean of its divisors is an integer number (183479940).

Almost surely, 2^1980971829 is an apocalyptic number.

It is an amenable number.

1980971829 is a deficient number, since it is larger than the sum of its proper divisors (954707211).

1980971829 is a wasteful number, since it uses less digits than its factorization.

1980971829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22657 (or 22651 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 54.

The square root of 1980971829 is about 44508.1096992447. The cubic root of 1980971829 is about 1255.9126452577.

The spelling of 1980971829 in words is "one billion, nine hundred eighty million, nine hundred seventy-one thousand, eight hundred twenty-nine".