18301030273 has 2 divisors, whose sum is σ = 18301030274. Its totient is φ = 18301030272.

The previous prime is 18301030259. The next prime is 18301030277. The reversal of 18301030273 is 37203010381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12581435889 + 5719594384 = 112167^2 + 75628^2 .

It is an emirp because it is prime and its reverse (37203010381) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18301030273 is a prime.

It is not a weakly prime, because it can be changed into another prime (18301030277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9150515136 + 9150515137.

It is an arithmetic number, because the mean of its divisors is an integer number (9150515137).

Almost surely, 2^18301030273 is an apocalyptic number.

It is an amenable number.

18301030273 is a deficient number, since it is larger than the sum of its proper divisors (1).

18301030273 is an equidigital number, since it uses as much as digits as its factorization.

18301030273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The spelling of 18301030273 in words is "eighteen billion, three hundred one million, thirty thousand, two hundred seventy-three".