18140627 has 2 divisors, whose sum is σ = 18140628. Its totient is φ = 18140626.

The previous prime is 18140623. The next prime is 18140653. The reversal of 18140627 is 72604181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18140627 - 2² = 18140623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18140627.

It is not a weakly prime, because it can be changed into another prime (18140621) 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, 9070313 + 9070314.

It is an arithmetic number, because the mean of its divisors is an integer number (9070314).

Almost surely, 2^18140627 is an apocalyptic number.

18140627 is a deficient number, since it is larger than the sum of its proper divisors (1).

18140627 is an equidigital number, since it uses as much as digits as its factorization.

18140627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 18140627 is about 4259.1814941371. The cubic root of 18140627 is about 262.7548641852.

The spelling of 18140627 in words is "eighteen million, one hundred forty thousand, six hundred twenty-seven".