18075427 has 2 divisors, whose sum is σ = 18075428. Its totient is φ = 18075426.

The previous prime is 18075413. The next prime is 18075443. The reversal of 18075427 is 72457081.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18075427 - 2²³ = 9686819 is a prime.

It is a super-2 number, since 2×18075427² = 653442122464658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18075392 and 18075401.

It is not a weakly prime, because it can be changed into another prime (18075467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9037713 + 9037714.

It is an arithmetic number, because the mean of its divisors is an integer number (9037714).

Almost surely, 2^18075427 is an apocalyptic number.

18075427 is a deficient number, since it is larger than the sum of its proper divisors (1).

18075427 is an equidigital number, since it uses as much as digits as its factorization.

18075427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 18075427 is about 4251.5205515204. The cubic root of 18075427 is about 262.4396934781.

The spelling of 18075427 in words is "eighteen million, seventy-five thousand, four hundred twenty-seven".