7144665181 has 2 divisors, whose sum is σ = 7144665182. Its totient is φ = 7144665180.

The previous prime is 7144665161. The next prime is 7144665211. The reversal of 7144665181 is 1815664417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6715802500 + 428862681 = 81950^2 + 20709^2 .

It is a cyclic number.

It is not a de Polignac number, because 7144665181 - 2¹⁵ = 7144632413 is a prime.

It is a super-2 number, since 2×7144665181² (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 (7144665161) 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, 3572332590 + 3572332591.

It is an arithmetic number, because the mean of its divisors is an integer number (3572332591).

Almost surely, 2^7144665181 is an apocalyptic number.

It is an amenable number.

7144665181 is a deficient number, since it is larger than the sum of its proper divisors (1).

7144665181 is an equidigital number, since it uses as much as digits as its factorization.

7144665181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 43.

The square root of 7144665181 is about 84526.1212939527. The cubic root of 7144665181 is about 1926.0192662302.

The spelling of 7144665181 in words is "seven billion, one hundred forty-four million, six hundred sixty-five thousand, one hundred eighty-one".