4662857891 has 2 divisors, whose sum is σ = 4662857892. Its totient is φ = 4662857890.

The previous prime is 4662857879. The next prime is 4662857939. The reversal of 4662857891 is 1987582664.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4662857891 - 2¹⁸ = 4662595747 is a prime.

It is not a weakly prime, because it can be changed into another prime (4662857791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2331428945 + 2331428946.

It is an arithmetic number, because the mean of its divisors is an integer number (2331428946).

Almost surely, 2^4662857891 is an apocalyptic number.

4662857891 is a deficient number, since it is larger than the sum of its proper divisors (1).

4662857891 is an equidigital number, since it uses as much as digits as its factorization.

4662857891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 56.

The square root of 4662857891 is about 68285.1220325482. The cubic root of 4662857891 is about 1670.6445563141.

The spelling of 4662857891 in words is "four billion, six hundred sixty-two million, eight hundred fifty-seven thousand, eight hundred ninety-one".