4919702721 has 4 divisors (see below), whose sum is σ = 6559603632. Its totient is φ = 3279801812.

The previous prime is 4919702719. The next prime is 4919702729. The reversal of 4919702721 is 1272079194.

4919702721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4919702721 - 2¹ = 4919702719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4919702729) 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, 819950451 + ... + 819950456.

It is an arithmetic number, because the mean of its divisors is an integer number (1639900908).

Almost surely, 2^4919702721 is an apocalyptic number.

It is an amenable number.

4919702721 is a deficient number, since it is larger than the sum of its proper divisors (1639900911).

4919702721 is a wasteful number, since it uses less digits than its factorization.

4919702721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639900910.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 4919702721 is about 70140.5925338530. The cubic root of 4919702721 is about 1700.7727422345.

The spelling of 4919702721 in words is "four billion, nine hundred nineteen million, seven hundred two thousand, seven hundred twenty-one".