4888888891 has 2 divisors, whose sum is σ = 4888888892. Its totient is φ = 4888888890.

The previous prime is 4888888843. The next prime is 4888888903. The reversal of 4888888891 is 1988888884.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4888888891 - 2⁹ = 4888888379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4888888891.

It is not a weakly prime, because it can be changed into another prime (4888888801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2444444445 + 2444444446.

It is an arithmetic number, because the mean of its divisors is an integer number (2444444446).

Almost surely, 2^4888888891 is an apocalyptic number.

4888888891 is a deficient number, since it is larger than the sum of its proper divisors (1).

4888888891 is an equidigital number, since it uses as much as digits as its factorization.

4888888891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75497472, while the sum is 70.

The square root of 4888888891 is about 69920.5898931066. The cubic root of 4888888891 is about 1697.2144567975.

The spelling of 4888888891 in words is "four billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred ninety-one".