881641289 has 2 divisors, whose sum is σ = 881641290. Its totient is φ = 881641288.

The previous prime is 881641261. The next prime is 881641297. The reversal of 881641289 is 982146188.

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., 470890000 + 410751289 = 21700^2 + 20267^2 .

It is a cyclic number.

It is not a de Polignac number, because 881641289 - 2¹² = 881637193 is a prime.

It is not a weakly prime, because it can be changed into another prime (881641889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440820644 + 440820645.

It is an arithmetic number, because the mean of its divisors is an integer number (440820645).

Almost surely, 2^881641289 is an apocalyptic number.

It is an amenable number.

881641289 is a deficient number, since it is larger than the sum of its proper divisors (1).

881641289 is an equidigital number, since it uses as much as digits as its factorization.

881641289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 47.

The square root of 881641289 is about 29692.4449818468. Note that the first 3 decimals coincide. The cubic root of 881641289 is about 958.8793669162.

It can be divided in two parts, 8816 and 41289, that added together give a palindrome (50105).

The spelling of 881641289 in words is "eight hundred eighty-one million, six hundred forty-one thousand, two hundred eighty-nine".