19068389 has 2 divisors, whose sum is σ = 19068390. Its totient is φ = 19068388.

The previous prime is 19068383. The next prime is 19068433. The reversal of 19068389 is 98386091.

It is an a-pointer prime, because the next prime (19068433) can be obtained adding 19068389 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15864289 + 3204100 = 3983^2 + 1790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19068389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19068383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9534194 + 9534195.

It is an arithmetic number, because the mean of its divisors is an integer number (9534195).

Almost surely, 2^19068389 is an apocalyptic number.

It is an amenable number.

19068389 is a deficient number, since it is larger than the sum of its proper divisors (1).

19068389 is an equidigital number, since it uses as much as digits as its factorization.

19068389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 19068389 is about 4366.7366533832. The cubic root of 19068389 is about 267.1599382146.

The spelling of 19068389 in words is "nineteen million, sixty-eight thousand, three hundred eighty-nine".