183636668381 has 2 divisors, whose sum is σ = 183636668382. Its totient is φ = 183636668380.

The previous prime is 183636668353. The next prime is 183636668387. The reversal of 183636668381 is 183866636381.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176963248900 + 6673419481 = 420670^2 + 81691^2 .

It is a cyclic number.

It is not a de Polignac number, because 183636668381 - 2¹⁴ = 183636651997 is a prime.

It is a super-2 number, since 2×183636668381² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 183636668381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (183636668387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91818334190 + 91818334191.

It is an arithmetic number, because the mean of its divisors is an integer number (91818334191).

Almost surely, 2^183636668381 is an apocalyptic number.

It is an amenable number.

183636668381 is a deficient number, since it is larger than the sum of its proper divisors (1).

183636668381 is an equidigital number, since it uses as much as digits as its factorization.

183636668381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17915904, while the sum is 59.

The spelling of 183636668381 in words is "one hundred eighty-three billion, six hundred thirty-six million, six hundred sixty-eight thousand, three hundred eighty-one".