2778364450 has 12 divisors (see below), whose sum is σ = 5167757970. Its totient is φ = 1111345760.

The previous prime is 2778364423. The next prime is 2778364453. The reversal of 2778364450 is 544638772.

It can be written as a sum of positive squares in 3 ways, for example, as 1757370241 + 1020994209 = 41921^2 + 31953^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2778364450.

It is not an unprimeable number, because it can be changed into a prime (2778364453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27783595 + ... + 27783694.

Almost surely, 2^2778364450 is an apocalyptic number.

2778364450 is a deficient number, since it is larger than the sum of its proper divisors (2389393520).

2778364450 is a wasteful number, since it uses less digits than its factorization.

2778364450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55567301 (or 55567296 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 46.

The square root of 2778364450 is about 52710.1930370208. The cubic root of 2778364450 is about 1405.8200655732.

The spelling of 2778364450 in words is "two billion, seven hundred seventy-eight million, three hundred sixty-four thousand, four hundred fifty".