7153268981 has 2 divisors, whose sum is σ = 7153268982. Its totient is φ = 7153268980.

The previous prime is 7153268923. The next prime is 7153268987. The reversal of 7153268981 is 1898623517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5774632081 + 1378636900 = 75991^2 + 37130^2 .

It is a cyclic number.

It is not a de Polignac number, because 7153268981 - 2¹⁴ = 7153252597 is a prime.

It is a super-2 number, since 2×7153268981² (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 (7153268987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3576634490 + 3576634491.

It is an arithmetic number, because the mean of its divisors is an integer number (3576634491).

Almost surely, 2^7153268981 is an apocalyptic number.

It is an amenable number.

7153268981 is a deficient number, since it is larger than the sum of its proper divisors (1).

7153268981 is an equidigital number, since it uses as much as digits as its factorization.

7153268981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 50.

The square root of 7153268981 is about 84577.0003074122. Note that the first 3 decimals coincide. The cubic root of 7153268981 is about 1926.7920776825.

The spelling of 7153268981 in words is "seven billion, one hundred fifty-three million, two hundred sixty-eight thousand, nine hundred eighty-one".