881323643 has 2 divisors, whose sum is σ = 881323644. Its totient is φ = 881323642.

The previous prime is 881323633. The next prime is 881323679. The reversal of 881323643 is 346323188.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 881323643 - 2²² = 877129339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 881323597 and 881323606.

It is not a weakly prime, because it can be changed into another prime (881323613) 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, 440661821 + 440661822.

It is an arithmetic number, because the mean of its divisors is an integer number (440661822).

Almost surely, 2^881323643 is an apocalyptic number.

881323643 is a deficient number, since it is larger than the sum of its proper divisors (1).

881323643 is an equidigital number, since it uses as much as digits as its factorization.

881323643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 38.

The square root of 881323643 is about 29687.0955635609. The cubic root of 881323643 is about 958.7641950635.

The spelling of 881323643 in words is "eight hundred eighty-one million, three hundred twenty-three thousand, six hundred forty-three".