180809858231 has 2 divisors, whose sum is σ = 180809858232. Its totient is φ = 180809858230.

The previous prime is 180809858123. The next prime is 180809858287. The reversal of 180809858231 is 132858908081.

Together with previous prime (180809858123) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (132858908081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 180809858231 - 2¹⁴ = 180809841847 is a prime.

It is a super-2 number, since 2×180809858231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180809857231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90404929115 + 90404929116.

It is an arithmetic number, because the mean of its divisors is an integer number (90404929116).

Almost surely, 2^180809858231 is an apocalyptic number.

180809858231 is a deficient number, since it is larger than the sum of its proper divisors (1).

180809858231 is an equidigital number, since it uses as much as digits as its factorization.

180809858231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1105920, while the sum is 53.

The spelling of 180809858231 in words is "one hundred eighty billion, eight hundred nine million, eight hundred fifty-eight thousand, two hundred thirty-one".