19890589108 has 48 divisors (see below), whose sum is σ = 37824393600. Its totient is φ = 9097766784.

The previous prime is 19890589073. The next prime is 19890589127. The reversal of 19890589108 is 80198509891.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3027435 + ... + 3033997.

It is an arithmetic number, because the mean of its divisors is an integer number (788008200).

Almost surely, 2^19890589108 is an apocalyptic number.

It is an amenable number.

19890589108 is a deficient number, since it is larger than the sum of its proper divisors (17933804492).

19890589108 is a wasteful number, since it uses less digits than its factorization.

19890589108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7096 (or 7094 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 58.

The spelling of 19890589108 in words is "nineteen billion, eight hundred ninety million, five hundred eighty-nine thousand, one hundred eight".