18273074959 has 2 divisors, whose sum is σ = 18273074960. Its totient is φ = 18273074958.

The previous prime is 18273074951. The next prime is 18273074977. The reversal of 18273074959 is 95947037281.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18273074959 - 2³ = 18273074951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18273074951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9136537479 + 9136537480.

It is an arithmetic number, because the mean of its divisors is an integer number (9136537480).

Almost surely, 2^18273074959 is an apocalyptic number.

18273074959 is a deficient number, since it is larger than the sum of its proper divisors (1).

18273074959 is an equidigital number, since it uses as much as digits as its factorization.

18273074959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 18273074959 in words is "eighteen billion, two hundred seventy-three million, seventy-four thousand, nine hundred fifty-nine".