9373741981 has 2 divisors, whose sum is σ = 9373741982. Its totient is φ = 9373741980.

The previous prime is 9373741943. The next prime is 9373742009. The reversal of 9373741981 is 1891473739.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8329482756 + 1044259225 = 91266^2 + 32315^2 .

It is an emirp because it is prime and its reverse (1891473739) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9373741981 - 2¹¹ = 9373739933 is a prime.

It is a super-2 number, since 2×9373741981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9373741081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4686870990 + 4686870991.

It is an arithmetic number, because the mean of its divisors is an integer number (4686870991).

Almost surely, 2^9373741981 is an apocalyptic number.

It is an amenable number.

9373741981 is a deficient number, since it is larger than the sum of its proper divisors (1).

9373741981 is an equidigital number, since it uses as much as digits as its factorization.

9373741981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 52.

The square root of 9373741981 is about 96818.0870550539. The cubic root of 9373741981 is about 2108.4873430960.

The spelling of 9373741981 in words is "nine billion, three hundred seventy-three million, seven hundred forty-one thousand, nine hundred eighty-one".