818147593831 has 2 divisors, whose sum is σ = 818147593832. Its totient is φ = 818147593830.

The previous prime is 818147593829. The next prime is 818147593849. The reversal of 818147593831 is 138395741818.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 818147593831 - 2¹ = 818147593829 is a prime.

It is a super-2 number, since 2×818147593831² (a number of 25 digits) contains 22 as substring.

Together with 818147593829, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (818147593031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409073796915 + 409073796916.

It is an arithmetic number, because the mean of its divisors is an integer number (409073796916).

Almost surely, 2^818147593831 is an apocalyptic number.

818147593831 is a deficient number, since it is larger than the sum of its proper divisors (1).

818147593831 is an equidigital number, since it uses as much as digits as its factorization.

818147593831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 58.

The spelling of 818147593831 in words is "eight hundred eighteen billion, one hundred forty-seven million, five hundred ninety-three thousand, eight hundred thirty-one".