18727992373 has 2 divisors, whose sum is σ = 18727992374. Its totient is φ = 18727992372.

The previous prime is 18727992337. The next prime is 18727992379. The reversal of 18727992373 is 37329972781.

Together with previous prime (18727992337) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13147603569 + 5580388804 = 114663^2 + 74702^2 .

It is a cyclic number.

It is not a de Polignac number, because 18727992373 - 2¹⁷ = 18727861301 is a prime.

It is a super-2 number, since 2×18727992373² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18727992379) 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, 9363996186 + 9363996187.

It is an arithmetic number, because the mean of its divisors is an integer number (9363996187).

Almost surely, 2^18727992373 is an apocalyptic number.

It is an amenable number.

18727992373 is a deficient number, since it is larger than the sum of its proper divisors (1).

18727992373 is an equidigital number, since it uses as much as digits as its factorization.

18727992373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8001504, while the sum is 58.

The spelling of 18727992373 in words is "eighteen billion, seven hundred twenty-seven million, nine hundred ninety-two thousand, three hundred seventy-three".