19953883873 has 16 divisors (see below), whose sum is σ = 25456121856. Its totient is φ = 15186885840.

The previous prime is 19953883867. The next prime is 19953883877. The reversal of 19953883873 is 37838835991.

It is a de Polignac number, because none of the positive numbers 2^k-19953883873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19953883877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3009961 + ... + 3016582.

It is an arithmetic number, because the mean of its divisors is an integer number (1591007616).

Almost surely, 2^19953883873 is an apocalyptic number.

It is an amenable number.

19953883873 is a deficient number, since it is larger than the sum of its proper divisors (5502237983).

19953883873 is a wasteful number, since it uses less digits than its factorization.

19953883873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6026604.

The product of its digits is 39191040, while the sum is 64.

The spelling of 19953883873 in words is "nineteen billion, nine hundred fifty-three million, eight hundred eighty-three thousand, eight hundred seventy-three".