183351851681 has 2 divisors, whose sum is σ = 183351851682. Its totient is φ = 183351851680.

The previous prime is 183351851671. The next prime is 183351851707. The reversal of 183351851681 is 186158153381.

183351851681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170090256400 + 13261595281 = 412420^2 + 115159^2 .

It is an emirp because it is prime and its reverse (186158153381) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-183351851681 is a prime.

It is a super-2 number, since 2×183351851681² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (183351851671) 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, 91675925840 + 91675925841.

It is an arithmetic number, because the mean of its divisors is an integer number (91675925841).

Almost surely, 2^183351851681 is an apocalyptic number.

It is an amenable number.

183351851681 is a deficient number, since it is larger than the sum of its proper divisors (1).

183351851681 is an equidigital number, since it uses as much as digits as its factorization.

183351851681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 691200, while the sum is 50.

The spelling of 183351851681 in words is "one hundred eighty-three billion, three hundred fifty-one million, eight hundred fifty-one thousand, six hundred eighty-one".