19973849880 has 32 divisors (see below), whose sum is σ = 59921550000. Its totient is φ = 5326359936.

The previous prime is 19973849873. The next prime is 19973849887. The reversal of 19973849880 is 8894837991.

It is an interprime number because it is at equal distance from previous prime (19973849873) and next prime (19973849887).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19973849887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83224255 + ... + 83224494.

Almost surely, 2^19973849880 is an apocalyptic number.

19973849880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19973849880 is an abundant number, since it is smaller than the sum of its proper divisors (39947700120).

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

19973849880 is a wasteful number, since it uses less digits than its factorization.

19973849880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166448763 (or 166448759 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 66.

The spelling of 19973849880 in words is "nineteen billion, nine hundred seventy-three million, eight hundred forty-nine thousand, eight hundred eighty".