4688193721 has 2 divisors, whose sum is σ = 4688193722. Its totient is φ = 4688193720.

The previous prime is 4688193691. The next prime is 4688193761. The reversal of 4688193721 is 1273918864.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2596412025 + 2091781696 = 50955^2 + 45736^2 .

It is a cyclic number.

It is not a de Polignac number, because 4688193721 - 2⁵ = 4688193689 is a prime.

It is not a weakly prime, because it can be changed into another prime (4688193761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2344096860 + 2344096861.

It is an arithmetic number, because the mean of its divisors is an integer number (2344096861).

Almost surely, 2^4688193721 is an apocalyptic number.

It is an amenable number.

4688193721 is a deficient number, since it is larger than the sum of its proper divisors (1).

4688193721 is an equidigital number, since it uses as much as digits as its factorization.

4688193721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 49.

The square root of 4688193721 is about 68470.3857225881. The cubic root of 4688193721 is about 1673.6649310788.

The spelling of 4688193721 in words is "four billion, six hundred eighty-eight million, one hundred ninety-three thousand, seven hundred twenty-one".