18228059 has 2 divisors, whose sum is σ = 18228060. Its totient is φ = 18228058.

The previous prime is 18228017. The next prime is 18228061. The reversal of 18228059 is 95082281.

18228059 is nontrivially palindromic in base 7.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18228059 - 2²⁰ = 17179483 is a prime.

Together with 18228061, 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 (18228659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9114029 + 9114030.

It is an arithmetic number, because the mean of its divisors is an integer number (9114030).

Almost surely, 2^18228059 is an apocalyptic number.

18228059 is a deficient number, since it is larger than the sum of its proper divisors (1).

18228059 is an equidigital number, since it uses as much as digits as its factorization.

18228059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 18228059 is about 4269.4331005416. The cubic root of 18228059 is about 263.1763191879.

The spelling of 18228059 in words is "eighteen million, two hundred twenty-eight thousand, fifty-nine".