9938152690481 has 2 divisors, whose sum is σ = 9938152690482. Its totient is φ = 9938152690480.

The previous prime is 9938152690441. The next prime is 9938152690549. The reversal of 9938152690481 is 1840962518399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7251258009856 + 2686894680625 = 2692816^2 + 1639175^2 .

It is a cyclic number.

It is not a de Polignac number, because 9938152690481 - 2¹⁴ = 9938152674097 is a prime.

It is a super-2 number, since 2×9938152690481² (a number of 27 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 (9938152690441) 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, 4969076345240 + 4969076345241.

It is an arithmetic number, because the mean of its divisors is an integer number (4969076345241).

Almost surely, 2^{9938152690481} is an apocalyptic number.

It is an amenable number.

9938152690481 is a deficient number, since it is larger than the sum of its proper divisors (1).

9938152690481 is an equidigital number, since it uses as much as digits as its factorization.

9938152690481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33592320, while the sum is 65.

The spelling of 9938152690481 in words is "nine trillion, nine hundred thirty-eight billion, one hundred fifty-two million, six hundred ninety thousand, four hundred eighty-one".