18132559 has 2 divisors, whose sum is σ = 18132560. Its totient is φ = 18132558.

The previous prime is 18132539. The next prime is 18132563. The reversal of 18132559 is 95523181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18132559 - 2⁷ = 18132431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18132509) 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, 9066279 + 9066280.

It is an arithmetic number, because the mean of its divisors is an integer number (9066280).

Almost surely, 2^18132559 is an apocalyptic number.

18132559 is a deficient number, since it is larger than the sum of its proper divisors (1).

18132559 is an equidigital number, since it uses as much as digits as its factorization.

18132559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 34.

The square root of 18132559 is about 4258.2342584691. The cubic root of 18132559 is about 262.7159052122.

The spelling of 18132559 in words is "eighteen million, one hundred thirty-two thousand, five hundred fifty-nine".