19885089211 has 16 divisors (see below), whose sum is σ = 21492216928. Its totient is φ = 18289152000.

The previous prime is 19885089187. The next prime is 19885089229. The reversal of 19885089211 is 11298058891.

It is a happy number.

It is a 12-Lehmer number, since φ(19885089211) divides (19885089211-1)¹².

It is a cyclic number.

It is not a de Polignac number, because 19885089211 - 2²⁹ = 19348218299 is a prime.

It is the 141015-th Hogben number.

It is not an unprimeable number, because it can be changed into a prime (19885089281) by changing a digit.

It is a nontrivial repunit in base 141014.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5750395 + ... + 5753851.

It is an arithmetic number, because the mean of its divisors is an integer number (1343263558).

Almost surely, 2^19885089211 is an apocalyptic number.

19885089211 is a deficient number, since it is larger than the sum of its proper divisors (1607127717).

19885089211 is a wasteful number, since it uses less digits than its factorization.

19885089211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4942.

The product of its (nonzero) digits is 414720, while the sum is 52.

The spelling of 19885089211 in words is "nineteen billion, eight hundred eighty-five million, eighty-nine thousand, two hundred eleven".