188483648281 has 2 divisors, whose sum is σ = 188483648282. Its totient is φ = 188483648280.

The previous prime is 188483648279. The next prime is 188483648329. The reversal of 188483648281 is 182846384881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177733069056 + 10750579225 = 421584^2 + 103685^2 .

It is a cyclic number.

It is not a de Polignac number, because 188483648281 - 2¹ = 188483648279 is a prime.

It is a super-2 number, since 2×188483648281² (a number of 23 digits) contains 22 as substring.

Together with 188483648279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (188483648201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94241824140 + 94241824141.

It is an arithmetic number, because the mean of its divisors is an integer number (94241824141).

Almost surely, 2^188483648281 is an apocalyptic number.

It is an amenable number.

188483648281 is a deficient number, since it is larger than the sum of its proper divisors (1).

188483648281 is an equidigital number, since it uses as much as digits as its factorization.

188483648281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18874368, while the sum is 61.

The spelling of 188483648281 in words is "one hundred eighty-eight billion, four hundred eighty-three million, six hundred forty-eight thousand, two hundred eighty-one".