18028519 has 2 divisors, whose sum is σ = 18028520. Its totient is φ = 18028518.

The previous prime is 18028499. The next prime is 18028523. The reversal of 18028519 is 91582081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18028519 - 2¹¹ = 18026471 is a prime.

It is a super-2 number, since 2×18028519² = 650054994666722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18028529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9014259 + 9014260.

It is an arithmetic number, because the mean of its divisors is an integer number (9014260).

Almost surely, 2^18028519 is an apocalyptic number.

18028519 is a deficient number, since it is larger than the sum of its proper divisors (1).

18028519 is an equidigital number, since it uses as much as digits as its factorization.

18028519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 18028519 is about 4246.0003532737. Note that the first 3 decimals coincide. The cubic root of 18028519 is about 262.2124755054.

The spelling of 18028519 in words is "eighteen million, twenty-eight thousand, five hundred nineteen".