18753272737 has 2 divisors, whose sum is σ = 18753272738. Its totient is φ = 18753272736.

The previous prime is 18753272723. The next prime is 18753272743. The reversal of 18753272737 is 73727235781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16951779601 + 1801493136 = 130199^2 + 42444^2 .

It is a cyclic number.

It is not a de Polignac number, because 18753272737 - 2¹⁵ = 18753239969 is a prime.

It is not a weakly prime, because it can be changed into another prime (18751272737) 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, 9376636368 + 9376636369.

It is an arithmetic number, because the mean of its divisors is an integer number (9376636369).

Almost surely, 2^18753272737 is an apocalyptic number.

It is an amenable number.

18753272737 is a deficient number, since it is larger than the sum of its proper divisors (1).

18753272737 is an equidigital number, since it uses as much as digits as its factorization.

18753272737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3457440, while the sum is 52.

The spelling of 18753272737 in words is "eighteen billion, seven hundred fifty-three million, two hundred seventy-two thousand, seven hundred thirty-seven".