19028927789 has 2 divisors, whose sum is σ = 19028927790. Its totient is φ = 19028927788.

The previous prime is 19028927719. The next prime is 19028927791. The reversal of 19028927789 is 98772982091.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10913980900 + 8114946889 = 104470^2 + 90083^2 .

It is a cyclic number.

It is not a de Polignac number, because 19028927789 - 2¹⁶ = 19028862253 is a prime.

Together with 19028927791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19028927719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9514463894 + 9514463895.

It is an arithmetic number, because the mean of its divisors is an integer number (9514463895).

Almost surely, 2^19028927789 is an apocalyptic number.

It is an amenable number.

19028927789 is a deficient number, since it is larger than the sum of its proper divisors (1).

19028927789 is an equidigital number, since it uses as much as digits as its factorization.

19028927789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9144576, while the sum is 62.

The spelling of 19028927789 in words is "nineteen billion, twenty-eight million, nine hundred twenty-seven thousand, seven hundred eighty-nine".