4278163117 has 2 divisors, whose sum is σ = 4278163118. Its totient is φ = 4278163116.

The previous prime is 4278163111. The next prime is 4278163129. The reversal of 4278163117 is 7113618724.

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., 4268139561 + 10023556 = 65331^2 + 3166^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4278163117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4278163117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4278163111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2139081558 + 2139081559.

It is an arithmetic number, because the mean of its divisors is an integer number (2139081559).

Almost surely, 2^4278163117 is an apocalyptic number.

It is an amenable number.

4278163117 is a deficient number, since it is larger than the sum of its proper divisors (1).

4278163117 is an equidigital number, since it uses as much as digits as its factorization.

4278163117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 40.

The square root of 4278163117 is about 65407.6686406112. The cubic root of 4278163117 is about 1623.3759701589.

The spelling of 4278163117 in words is "four billion, two hundred seventy-eight million, one hundred sixty-three thousand, one hundred seventeen".