188326010881 has 2 divisors, whose sum is σ = 188326010882. Its totient is φ = 188326010880.

The previous prime is 188326010849. The next prime is 188326010903. The reversal of 188326010881 is 188010623881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176047376400 + 12278634481 = 419580^2 + 110809^2 .

It is a cyclic number.

It is not a de Polignac number, because 188326010881 - 2⁵ = 188326010849 is a prime.

It is a super-2 number, since 2×188326010881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (188326010281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94163005440 + 94163005441.

It is an arithmetic number, because the mean of its divisors is an integer number (94163005441).

Almost surely, 2^188326010881 is an apocalyptic number.

It is an amenable number.

188326010881 is a deficient number, since it is larger than the sum of its proper divisors (1).

188326010881 is an equidigital number, since it uses as much as digits as its factorization.

188326010881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147456, while the sum is 46.

The spelling of 188326010881 in words is "one hundred eighty-eight billion, three hundred twenty-six million, ten thousand, eight hundred eighty-one".