18237013133 has 2 divisors, whose sum is σ = 18237013134. Its totient is φ = 18237013132.

The previous prime is 18237013061. The next prime is 18237013189. The reversal of 18237013133 is 33131073281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13303776964 + 4933236169 = 115342^2 + 70237^2 .

It is a cyclic number.

It is not a de Polignac number, because 18237013133 - 2¹⁰ = 18237012109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18237013133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18237013633) 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, 9118506566 + 9118506567.

It is an arithmetic number, because the mean of its divisors is an integer number (9118506567).

Almost surely, 2^18237013133 is an apocalyptic number.

It is an amenable number.

18237013133 is a deficient number, since it is larger than the sum of its proper divisors (1).

18237013133 is an equidigital number, since it uses as much as digits as its factorization.

18237013133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The spelling of 18237013133 in words is "eighteen billion, two hundred thirty-seven million, thirteen thousand, one hundred thirty-three".