6168442513 has 2 divisors, whose sum is σ = 6168442514. Its totient is φ = 6168442512.

The previous prime is 6168442487. The next prime is 6168442561. The reversal of 6168442513 is 3152448616.

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., 4328718849 + 1839723664 = 65793^2 + 42892^2 .

It is a cyclic number.

It is not a de Polignac number, because 6168442513 - 2⁹ = 6168442001 is a prime.

It is not a weakly prime, because it can be changed into another prime (6168446513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3084221256 + 3084221257.

It is an arithmetic number, because the mean of its divisors is an integer number (3084221257).

Almost surely, 2^6168442513 is an apocalyptic number.

It is an amenable number.

6168442513 is a deficient number, since it is larger than the sum of its proper divisors (1).

6168442513 is an equidigital number, since it uses as much as digits as its factorization.

6168442513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 40.

The square root of 6168442513 is about 78539.4328538219. The cubic root of 6168442513 is about 1833.9683671581.

The spelling of 6168442513 in words is "six billion, one hundred sixty-eight million, four hundred forty-two thousand, five hundred thirteen".