2778541822 has 32 divisors (see below), whose sum is σ = 4793702400. Its totient is φ = 1183206528.

The previous prime is 2778541771. The next prime is 2778541837. The reversal of 2778541822 is 2281458772.

It is a happy number.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2753254 + ... + 2754262.

It is an arithmetic number, because the mean of its divisors is an integer number (149803200).

Almost surely, 2^2778541822 is an apocalyptic number.

2778541822 is a deficient number, since it is larger than the sum of its proper divisors (2015160578).

2778541822 is a wasteful number, since it uses less digits than its factorization.

2778541822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080.

The product of its digits is 501760, while the sum is 46.

The square root of 2778541822 is about 52711.8755310414. The cubic root of 2778541822 is about 1405.8499809922.

The spelling of 2778541822 in words is "two billion, seven hundred seventy-eight million, five hundred forty-one thousand, eight hundred twenty-two".