18295225931 has 2 divisors, whose sum is σ = 18295225932. Its totient is φ = 18295225930.

The previous prime is 18295225889. The next prime is 18295225933. The reversal of 18295225931 is 13952259281.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18295225931 - 2¹⁰ = 18295224907 is a prime.

It is a super-2 number, since 2×18295225931² (a number of 21 digits) contains 22 as substring.

Together with 18295225933, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18295225933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9147612965 + 9147612966.

It is an arithmetic number, because the mean of its divisors is an integer number (9147612966).

Almost surely, 2^18295225931 is an apocalyptic number.

18295225931 is a deficient number, since it is larger than the sum of its proper divisors (1).

18295225931 is an equidigital number, since it uses as much as digits as its factorization.

18295225931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 47.

The spelling of 18295225931 in words is "eighteen billion, two hundred ninety-five million, two hundred twenty-five thousand, nine hundred thirty-one".