19235839989 has 32 divisors (see below), whose sum is σ = 27874344960. Its totient is φ = 11759126400.

The previous prime is 19235839969. The next prime is 19235840003. The reversal of 19235839989 is 98993853291.

It is not a de Polignac number, because 19235839989 - 2⁵ = 19235839957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19235839939) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 264394 + ... + 329204.

It is an arithmetic number, because the mean of its divisors is an integer number (871073280).

Almost surely, 2^19235839989 is an apocalyptic number.

19235839989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

19235839989 is a deficient number, since it is larger than the sum of its proper divisors (8638504971).

19235839989 is a wasteful number, since it uses less digits than its factorization.

19235839989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65001.

The product of its digits is 37791360, while the sum is 66.

The spelling of 19235839989 in words is "nineteen billion, two hundred thirty-five million, eight hundred thirty-nine thousand, nine hundred eighty-nine".