9634449731481 has 27 divisors (see below), whose sum is σ = 13992252762943. Its totient is φ = 6388158893280.

The previous prime is 9634449731447. The next prime is 9634449731539. The reversal of 9634449731481 is 1841379444369.

The square root of 9634449731481 is 3103941.

It is a perfect power (a square), and thus also a powerful number.

9634449731481 is a `hidden beast` number, since 9 + 6 + 3 + 44 + 49 + 73 + 1 + 481 = 666.

9634449731481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 783729531225 + 8850720200256 = 885285^2 + 2975016^2 .

It is not a de Polignac number, because 9634449731481 - 2⁷ = 9634449731353 is a prime.

It is a super-2 number, since 2×9634449731481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9634449731281) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1778555485 + ... + 1778560901.

Almost surely, 2^{9634449731481} is an apocalyptic number.

9634449731481 is the 3103941-st square number.

9634449731481 is the 1551971-st centered octagonal number.

It is an amenable number.

9634449731481 is a deficient number, since it is larger than the sum of its proper divisors (4357803031462).

9634449731481 is an frugal number, since it uses more digits than its factorization.

9634449731481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11222 (or 5611 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 63.

The spelling of 9634449731481 in words is "nine trillion, six hundred thirty-four billion, four hundred forty-nine million, seven hundred thirty-one thousand, four hundred eighty-one".