18485959 has 2 divisors, whose sum is σ = 18485960. Its totient is φ = 18485958.

The previous prime is 18485891. The next prime is 18485981. The reversal of 18485959 is 95958481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18485959 - 2¹¹ = 18483911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18485759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9242979 + 9242980.

It is an arithmetic number, because the mean of its divisors is an integer number (9242980).

Almost surely, 2^18485959 is an apocalyptic number.

18485959 is a deficient number, since it is larger than the sum of its proper divisors (1).

18485959 is an equidigital number, since it uses as much as digits as its factorization.

18485959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 49.

The square root of 18485959 is about 4299.5300906029. The cubic root of 18485959 is about 264.4116959907.

The spelling of 18485959 in words is "eighteen million, four hundred eighty-five thousand, nine hundred fifty-nine".