9734229781 has 2 divisors, whose sum is σ = 9734229782. Its totient is φ = 9734229780.

The previous prime is 9734229779. The next prime is 9734229787. The reversal of 9734229781 is 1879224379.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9723932100 + 10297681 = 98610^2 + 3209^2 .

It is a cyclic number.

It is not a de Polignac number, because 9734229781 - 2¹ = 9734229779 is a prime.

It is a super-2 number, since 2×9734229781² (a number of 21 digits) contains 22 as substring.

Together with 9734229779, 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 (9734229787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4867114890 + 4867114891.

It is an arithmetic number, because the mean of its divisors is an integer number (4867114891).

Almost surely, 2^9734229781 is an apocalyptic number.

It is an amenable number.

9734229781 is a deficient number, since it is larger than the sum of its proper divisors (1).

9734229781 is an equidigital number, since it uses as much as digits as its factorization.

9734229781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 52.

The square root of 9734229781 is about 98662.2003656922. The cubic root of 9734229781 is about 2135.1769113733.

The spelling of 9734229781 in words is "nine billion, seven hundred thirty-four million, two hundred twenty-nine thousand, seven hundred eighty-one".