9473037781 has 2 divisors, whose sum is σ = 9473037782. Its totient is φ = 9473037780.

The previous prime is 9473037779. The next prime is 9473037787. The reversal of 9473037781 is 1877303749.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5441422756 + 4031615025 = 73766^2 + 63495^2 .

It is a cyclic number.

It is not a de Polignac number, because 9473037781 - 2¹ = 9473037779 is a prime.

It is a super-2 number, since 2×9473037781² (a number of 21 digits) contains 22 as substring.

Together with 9473037779, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9473037787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4736518890 + 4736518891.

It is an arithmetic number, because the mean of its divisors is an integer number (4736518891).

Almost surely, 2^9473037781 is an apocalyptic number.

It is an amenable number.

9473037781 is a deficient number, since it is larger than the sum of its proper divisors (1).

9473037781 is an equidigital number, since it uses as much as digits as its factorization.

9473037781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 889056, while the sum is 49.

The square root of 9473037781 is about 97329.5319057890. The cubic root of 9473037781 is about 2115.9062584660.

The spelling of 9473037781 in words is "nine billion, four hundred seventy-three million, thirty-seven thousand, seven hundred eighty-one".