18082719 has 6 divisors (see below), whose sum is σ = 26119496. Its totient is φ = 12055140.

The previous prime is 18082717. The next prime is 18082721. The reversal of 18082719 is 91728081.

It is an interprime number because it is at equal distance from previous prime (18082717) and next prime (18082721).

It is not a de Polignac number, because 18082719 - 2¹ = 18082717 is a prime.

It is a super-2 number, since 2×18082719² = 653969452865922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18082711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1004587 + ... + 1004604.

Almost surely, 2^18082719 is an apocalyptic number.

18082719 is a deficient number, since it is larger than the sum of its proper divisors (8036777).

18082719 is a wasteful number, since it uses less digits than its factorization.

18082719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009197 (or 2009194 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 18082719 is about 4252.3780405792. The cubic root of 18082719 is about 262.4749799282.

The spelling of 18082719 in words is "eighteen million, eighty-two thousand, seven hundred nineteen".