318646135741 has 2 divisors, whose sum is σ = 318646135742. Its totient is φ = 318646135740.

The previous prime is 318646135739. The next prime is 318646135813. The reversal of 318646135741 is 147531646813.

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., 200550813241 + 118095322500 = 447829^2 + 343650^2 .

It is a cyclic number.

It is not a de Polignac number, because 318646135741 - 2¹ = 318646135739 is a prime.

Together with 318646135739, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318646135711) 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, 159323067870 + 159323067871.

It is an arithmetic number, because the mean of its divisors is an integer number (159323067871).

Almost surely, 2^318646135741 is an apocalyptic number.

It is an amenable number.

318646135741 is a deficient number, since it is larger than the sum of its proper divisors (1).

318646135741 is an equidigital number, since it uses as much as digits as its factorization.

318646135741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 49.

The spelling of 318646135741 in words is "three hundred eighteen billion, six hundred forty-six million, one hundred thirty-five thousand, seven hundred forty-one".