18069719 has 2 divisors, whose sum is σ = 18069720. Its totient is φ = 18069718.

The previous prime is 18069673. The next prime is 18069721. The reversal of 18069719 is 91796081.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18069719 - 2²⁰ = 17021143 is a prime.

It is a super-2 number, since 2×18069719² = 653029489477922, which contains 22 as substring.

Together with 18069721, 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 (18069769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9034859 + 9034860.

It is an arithmetic number, because the mean of its divisors is an integer number (9034860).

Almost surely, 2^18069719 is an apocalyptic number.

18069719 is a deficient number, since it is larger than the sum of its proper divisors (1).

18069719 is an equidigital number, since it uses as much as digits as its factorization.

18069719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 18069719 is about 4250.8492092757. The cubic root of 18069719 is about 262.4120654820.

The spelling of 18069719 in words is "eighteen million, sixty-nine thousand, seven hundred nineteen".