981322801 has 2 divisors, whose sum is σ = 981322802. Its totient is φ = 981322800.

The previous prime is 981322759. The next prime is 981322817. The reversal of 981322801 is 108223189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 912100401 + 69222400 = 30201^2 + 8320^2 .

It is a cyclic number.

It is not a de Polignac number, because 981322801 - 2⁷ = 981322673 is a prime.

It is not a weakly prime, because it can be changed into another prime (981322891) 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, 490661400 + 490661401.

It is an arithmetic number, because the mean of its divisors is an integer number (490661401).

Almost surely, 2^981322801 is an apocalyptic number.

It is an amenable number.

981322801 is a deficient number, since it is larger than the sum of its proper divisors (1).

981322801 is an equidigital number, since it uses as much as digits as its factorization.

981322801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 981322801 is about 31326.0722242671. The cubic root of 981322801 is about 993.7350999915.

The spelling of 981322801 in words is "nine hundred eighty-one million, three hundred twenty-two thousand, eight hundred one".