19342489 has 2 divisors, whose sum is σ = 19342490. Its totient is φ = 19342488.

The previous prime is 19342487. The next prime is 19342523. The reversal of 19342489 is 98424391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13749264 + 5593225 = 3708^2 + 2365^2 .

It is a cyclic number.

It is not a de Polignac number, because 19342489 - 2¹ = 19342487 is a prime.

Together with 19342487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (19342483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9671244 + 9671245.

It is an arithmetic number, because the mean of its divisors is an integer number (9671245).

Almost surely, 2^19342489 is an apocalyptic number.

It is an amenable number.

19342489 is a deficient number, since it is larger than the sum of its proper divisors (1).

19342489 is an equidigital number, since it uses as much as digits as its factorization.

19342489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 19342489 is about 4398.0096634728. The cubic root of 19342489 is about 268.4339566640.

The spelling of 19342489 in words is "nineteen million, three hundred forty-two thousand, four hundred eighty-nine".