18140527 has 2 divisors, whose sum is σ = 18140528. Its totient is φ = 18140526.

The previous prime is 18140519. The next prime is 18140531. The reversal of 18140527 is 72504181.

It is a strong prime.

It is an emirp because it is prime and its reverse (72504181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18140527 - 2³ = 18140519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18140495 and 18140504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18140557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9070263 + 9070264.

It is an arithmetic number, because the mean of its divisors is an integer number (9070264).

Almost surely, 2^18140527 is an apocalyptic number.

18140527 is a deficient number, since it is larger than the sum of its proper divisors (1).

18140527 is an equidigital number, since it uses as much as digits as its factorization.

18140527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 18140527 is about 4259.1697547762. The cubic root of 18140527 is about 262.7543813733.

The spelling of 18140527 in words is "eighteen million, one hundred forty thousand, five hundred twenty-seven".