18124019 has 2 divisors, whose sum is σ = 18124020. Its totient is φ = 18124018.

The previous prime is 18123991. The next prime is 18124021. The reversal of 18124019 is 91042181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18124019 - 2¹⁶ = 18058483 is a prime.

It is a super-2 number, since 2×18124019² = 656960129424722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 18124021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18124319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9062009 + 9062010.

It is an arithmetic number, because the mean of its divisors is an integer number (9062010).

Almost surely, 2^18124019 is an apocalyptic number.

18124019 is a deficient number, since it is larger than the sum of its proper divisors (1).

18124019 is an equidigital number, since it uses as much as digits as its factorization.

18124019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 18124019 is about 4257.2313773155. The cubic root of 18124019 is about 262.6746544406.

The spelling of 18124019 in words is "eighteen million, one hundred twenty-four thousand, nineteen".