2778888622 has 4 divisors (see below), whose sum is σ = 4168332936. Its totient is φ = 1389444310.

The previous prime is 2778888599. The next prime is 2778888659. The reversal of 2778888622 is 2268888772.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694722154 + ... + 694722157.

It is an arithmetic number, because the mean of its divisors is an integer number (1042083234).

Almost surely, 2^2778888622 is an apocalyptic number.

2778888622 is a deficient number, since it is larger than the sum of its proper divisors (1389444314).

2778888622 is a wasteful number, since it uses less digits than its factorization.

2778888622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389444313.

The product of its digits is 9633792, while the sum is 58.

The square root of 2778888622 is about 52715.1650097010. The cubic root of 2778888622 is about 1405.9084683238.

The spelling of 2778888622 in words is "two billion, seven hundred seventy-eight million, eight hundred eighty-eight thousand, six hundred twenty-two".