9801373481 has 2 divisors, whose sum is σ = 9801373482. Its totient is φ = 9801373480.

The previous prime is 9801373427. The next prime is 9801373493. The reversal of 9801373481 is 1843731089.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8375178256 + 1426195225 = 91516^2 + 37765^2 .

It is a cyclic number.

It is not a de Polignac number, because 9801373481 - 2²² = 9797179177 is a prime.

It is a super-2 number, since 2×9801373481² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9801373411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4900686740 + 4900686741.

It is an arithmetic number, because the mean of its divisors is an integer number (4900686741).

Almost surely, 2^9801373481 is an apocalyptic number.

It is an amenable number.

9801373481 is a deficient number, since it is larger than the sum of its proper divisors (1).

9801373481 is an equidigital number, since it uses as much as digits as its factorization.

9801373481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 9801373481 is about 99001.8862497074. The cubic root of 9801373481 is about 2140.0749297577.

The spelling of 9801373481 in words is "nine billion, eight hundred one million, three hundred seventy-three thousand, four hundred eighty-one".