981428797441 has 2 divisors, whose sum is σ = 981428797442. Its totient is φ = 981428797440.

The previous prime is 981428797289. The next prime is 981428797457. The reversal of 981428797441 is 144797824189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 703493175025 + 277935622416 = 838745^2 + 527196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-981428797441 is a prime.

It is not a weakly prime, because it can be changed into another prime (981428797241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490714398720 + 490714398721.

It is an arithmetic number, because the mean of its divisors is an integer number (490714398721).

Almost surely, 2^981428797441 is an apocalyptic number.

It is an amenable number.

981428797441 is a deficient number, since it is larger than the sum of its proper divisors (1).

981428797441 is an equidigital number, since it uses as much as digits as its factorization.

981428797441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32514048, while the sum is 64.

The spelling of 981428797441 in words is "nine hundred eighty-one billion, four hundred twenty-eight million, seven hundred ninety-seven thousand, four hundred forty-one".