4888642861 has 2 divisors, whose sum is σ = 4888642862. Its totient is φ = 4888642860.

The previous prime is 4888642853. The next prime is 4888642879. The reversal of 4888642861 is 1682468884.

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., 3918008836 + 970634025 = 62594^2 + 31155^2 .

It is a cyclic number.

It is not a de Polignac number, because 4888642861 - 2³ = 4888642853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4888642841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2444321430 + 2444321431.

It is an arithmetic number, because the mean of its divisors is an integer number (2444321431).

Almost surely, 2^4888642861 is an apocalyptic number.

It is an amenable number.

4888642861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4888642861 is an equidigital number, since it uses as much as digits as its factorization.

4888642861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4718592, while the sum is 55.

The square root of 4888642861 is about 69918.8305179656. The cubic root of 4888642861 is about 1697.1859859331.

The spelling of 4888642861 in words is "four billion, eight hundred eighty-eight million, six hundred forty-two thousand, eight hundred sixty-one".