7531654861 has 2 divisors, whose sum is σ = 7531654862. Its totient is φ = 7531654860.

The previous prime is 7531654829. The next prime is 7531654901. The reversal of 7531654861 is 1684561357.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6002375625 + 1529279236 = 77475^2 + 39106^2 .

It is a cyclic number.

It is not a de Polignac number, because 7531654861 - 2⁵ = 7531654829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7531654661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3765827430 + 3765827431.

It is an arithmetic number, because the mean of its divisors is an integer number (3765827431).

Almost surely, 2^7531654861 is an apocalyptic number.

It is an amenable number.

7531654861 is a deficient number, since it is larger than the sum of its proper divisors (1).

7531654861 is an equidigital number, since it uses as much as digits as its factorization.

7531654861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 46.

The square root of 7531654861 is about 86785.1073687185. The cubic root of 7531654861 is about 1960.1838350581.

The spelling of 7531654861 in words is "seven billion, five hundred thirty-one million, six hundred fifty-four thousand, eight hundred sixty-one".