19811872883 has 8 divisors (see below), whose sum is σ = 21665800560. Its totient is φ = 17966753280.

The previous prime is 19811872859. The next prime is 19811872903. The reversal of 19811872883 is 38827811891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19811872883 - 2⁶ = 19811872819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19811872583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2197310 + ... + 2206307.

It is an arithmetic number, because the mean of its divisors is an integer number (2708225070).

Almost surely, 2^19811872883 is an apocalyptic number.

19811872883 is a deficient number, since it is larger than the sum of its proper divisors (1853927677).

19811872883 is a wasteful number, since it uses less digits than its factorization.

19811872883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4404037.

The product of its digits is 1548288, while the sum is 56.

The spelling of 19811872883 in words is "nineteen billion, eight hundred eleven million, eight hundred seventy-two thousand, eight hundred eighty-three".