18120997283 has 2 divisors, whose sum is σ = 18120997284. Its totient is φ = 18120997282.

The previous prime is 18120997241. The next prime is 18120997303. The reversal of 18120997283 is 38279902181.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18120997283 is a prime.

It is not a weakly prime, because it can be changed into another prime (18120997183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9060498641 + 9060498642.

It is an arithmetic number, because the mean of its divisors is an integer number (9060498642).

Almost surely, 2^18120997283 is an apocalyptic number.

18120997283 is a deficient number, since it is larger than the sum of its proper divisors (1).

18120997283 is an equidigital number, since it uses as much as digits as its factorization.

18120997283 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 50.

The spelling of 18120997283 in words is "eighteen billion, one hundred twenty million, nine hundred ninety-seven thousand, two hundred eighty-three".