2778522242 has 16 divisors (see below), whose sum is σ = 4183220160. Its totient is φ = 1384125072.

The previous prime is 2778522217. The next prime is 2778522283. The reversal of 2778522242 is 2422258772.

It is a self number, because there is not a number n which added to its sum of digits gives 2778522242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 822068 + ... + 825440.

It is an arithmetic number, because the mean of its divisors is an integer number (261451260).

Almost surely, 2^2778522242 is an apocalyptic number.

2778522242 is a deficient number, since it is larger than the sum of its proper divisors (1404697918).

2778522242 is a wasteful number, since it uses less digits than its factorization.

2778522242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4777.

The product of its digits is 250880, while the sum is 41.

The square root of 2778522242 is about 52711.6898040653. The cubic root of 2778522242 is about 1405.8466787077.

The spelling of 2778522242 in words is "two billion, seven hundred seventy-eight million, five hundred twenty-two thousand, two hundred forty-two".