18120959 has 2 divisors, whose sum is σ = 18120960. Its totient is φ = 18120958.

The previous prime is 18120937. The next prime is 18120967. The reversal of 18120959 is 95902181.

It is a strong prime.

It is an emirp because it is prime and its reverse (95902181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18120959 - 2¹² = 18116863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18120919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9060479 + 9060480.

It is an arithmetic number, because the mean of its divisors is an integer number (9060480).

Almost surely, 2^18120959 is an apocalyptic number.

18120959 is a deficient number, since it is larger than the sum of its proper divisors (1).

18120959 is an equidigital number, since it uses as much as digits as its factorization.

18120959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 18120959 is about 4256.8719736445. The cubic root of 18120959 is about 262.6598705658.

The spelling of 18120959 in words is "eighteen million, one hundred twenty thousand, nine hundred fifty-nine".