19890589107 has 16 divisors (see below), whose sum is σ = 27452414880. Its totient is φ = 12795148800.

The previous prime is 19890589073. The next prime is 19890589127. The reversal of 19890589107 is 70198509891.

It is not a de Polignac number, because 19890589107 - 2¹⁶ = 19890523571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19890589127) 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, 70507 + ... + 211547.

It is an arithmetic number, because the mean of its divisors is an integer number (1715775930).

Almost surely, 2^19890589107 is an apocalyptic number.

19890589107 is a deficient number, since it is larger than the sum of its proper divisors (7561825773).

19890589107 is a wasteful number, since it uses less digits than its factorization.

19890589107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142694.

The product of its (nonzero) digits is 1632960, while the sum is 57.

The spelling of 19890589107 in words is "nineteen billion, eight hundred ninety million, five hundred eighty-nine thousand, one hundred seven".