18050609 has 2 divisors, whose sum is σ = 18050610. Its totient is φ = 18050608.

The previous prime is 18050603. The next prime is 18050611. The reversal of 18050609 is 90605081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10543009 + 7507600 = 3247^2 + 2740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18050609 is a prime.

Together with 18050611, 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 (18050603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9025304 + 9025305.

It is an arithmetic number, because the mean of its divisors is an integer number (9025305).

Almost surely, 2^18050609 is an apocalyptic number.

It is an amenable number.

18050609 is a deficient number, since it is larger than the sum of its proper divisors (1).

18050609 is an equidigital number, since it uses as much as digits as its factorization.

18050609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 18050609 is about 4248.6008285081. The cubic root of 18050609 is about 262.3195264409.

The spelling of 18050609 in words is "eighteen million, fifty thousand, six hundred nine".