9134579981 has 2 divisors, whose sum is σ = 9134579982. Its totient is φ = 9134579980.

The previous prime is 9134579977. The next prime is 9134579989. The reversal of 9134579981 is 1899754319.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7819864900 + 1314715081 = 88430^2 + 36259^2 .

It is a cyclic number.

It is not a de Polignac number, because 9134579981 - 2² = 9134579977 is a prime.

It is a super-2 number, since 2×9134579981² (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 (9134579989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4567289990 + 4567289991.

It is an arithmetic number, because the mean of its divisors is an integer number (4567289991).

Almost surely, 2^9134579981 is an apocalyptic number.

It is an amenable number.

9134579981 is a deficient number, since it is larger than the sum of its proper divisors (1).

9134579981 is an equidigital number, since it uses as much as digits as its factorization.

9134579981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 56.

The square root of 9134579981 is about 95574.9966309181. The cubic root of 9134579981 is about 2090.4006299134.

The spelling of 9134579981 in words is "nine billion, one hundred thirty-four million, five hundred seventy-nine thousand, nine hundred eighty-one".