19882468081 has 4 divisors (see below), whose sum is σ = 22722820672. Its totient is φ = 17042115492.

The previous prime is 19882468079. The next prime is 19882468141. The reversal of 19882468081 is 18086428891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19882468081 - 2¹ = 19882468079 is a prime.

It is a super-2 number, since 2×19882468081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19882468061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1420176285 + ... + 1420176298.

It is an arithmetic number, because the mean of its divisors is an integer number (5680705168).

Almost surely, 2^19882468081 is an apocalyptic number.

It is an amenable number.

19882468081 is a deficient number, since it is larger than the sum of its proper divisors (2840352591).

19882468081 is an equidigital number, since it uses as much as digits as its factorization.

19882468081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2840352590.

The product of its (nonzero) digits is 1769472, while the sum is 55.

The spelling of 19882468081 in words is "nineteen billion, eight hundred eighty-two million, four hundred sixty-eight thousand, eighty-one".