4686378857 has 4 divisors (see below), whose sum is σ = 4686563460. Its totient is φ = 4686194256.

The previous prime is 4686378847. The next prime is 4686378871. The reversal of 4686378857 is 7588736864.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2252831296 + 2433547561 = 47464^2 + 49331^2 .

It is a cyclic number.

It is not a de Polignac number, because 4686378857 - 2²⁰ = 4685330281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4686378857.

It is not an unprimeable number, because it can be changed into a prime (4686378817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46718 + ... + 107495.

It is an arithmetic number, because the mean of its divisors is an integer number (1171640865).

Almost surely, 2^4686378857 is an apocalyptic number.

It is an amenable number.

4686378857 is a deficient number, since it is larger than the sum of its proper divisors (184603).

4686378857 is a wasteful number, since it uses less digits than its factorization.

4686378857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184602.

The product of its digits is 54190080, while the sum is 62.

The square root of 4686378857 is about 68457.1315276940. The cubic root of 4686378857 is about 1673.4489369991.

The spelling of 4686378857 in words is "four billion, six hundred eighty-six million, three hundred seventy-eight thousand, eight hundred fifty-seven".