2722619947 has 4 divisors (see below), whose sum is σ = 2729619360. Its totient is φ = 2715620536.

The previous prime is 2722619903. The next prime is 2722619993. The reversal of 2722619947 is 7499162272.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2722619947 - 2¹¹ = 2722617899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2722619947.

It is not an unprimeable number, because it can be changed into a prime (2722619047) 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, 3499123 + ... + 3499900.

It is an arithmetic number, because the mean of its divisors is an integer number (682404840).

Almost surely, 2^2722619947 is an apocalyptic number.

2722619947 is a deficient number, since it is larger than the sum of its proper divisors (6999413).

2722619947 is an equidigital number, since it uses as much as digits as its factorization.

2722619947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6999412.

The product of its digits is 762048, while the sum is 49.

The square root of 2722619947 is about 52178.7307913866. The cubic root of 2722619947 is about 1396.3544519324.

The spelling of 2722619947 in words is "two billion, seven hundred twenty-two million, six hundred nineteen thousand, nine hundred forty-seven".