2778364198 has 16 divisors (see below), whose sum is σ = 4392604080. Its totient is φ = 1315970656.

The previous prime is 2778364153. The next prime is 2778364229. The reversal of 2778364198 is 8914638772.

2778364198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 448840 + ... + 454987.

It is an arithmetic number, because the mean of its divisors is an integer number (274537755).

Almost surely, 2^2778364198 is an apocalyptic number.

2778364198 is a deficient number, since it is larger than the sum of its proper divisors (1614239882).

2778364198 is a wasteful number, since it uses less digits than its factorization.

2778364198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903911.

The product of its digits is 4064256, while the sum is 55.

The square root of 2778364198 is about 52710.1906465913. The cubic root of 2778364198 is about 1405.8200230701.

The spelling of 2778364198 in words is "two billion, seven hundred seventy-eight million, three hundred sixty-four thousand, one hundred ninety-eight".