6318143977 has 2 divisors, whose sum is σ = 6318143978. Its totient is φ = 6318143976.

The previous prime is 6318143971. The next prime is 6318143987. The reversal of 6318143977 is 7793418136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5961538521 + 356605456 = 77211^2 + 18884^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6318143977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6318143977.

It is not a weakly prime, because it can be changed into another prime (6318143971) 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, 3159071988 + 3159071989.

It is an arithmetic number, because the mean of its divisors is an integer number (3159071989).

Almost surely, 2^6318143977 is an apocalyptic number.

It is an amenable number.

6318143977 is a deficient number, since it is larger than the sum of its proper divisors (1).

6318143977 is an equidigital number, since it uses as much as digits as its factorization.

6318143977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 49.

The square root of 6318143977 is about 79486.7534687384. The cubic root of 6318143977 is about 1848.6860869665.

The spelling of 6318143977 in words is "six billion, three hundred eighteen million, one hundred forty-three thousand, nine hundred seventy-seven".