2778440598 has 12 divisors (see below), whose sum is σ = 6019954668. Its totient is φ = 926146860.

The previous prime is 2778440527. The next prime is 2778440617. The reversal of 2778440598 is 8950448772.

It is a happy number.

2778440598 is a `hidden beast` number, since 2 + 7 + 7 + 8 + 4 + 40 + 598 = 666.

It is a super-2 number, since 2×2778440598² = 15439464313229195208, which contains 22 as substring.

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 in 5 ways as a sum of consecutive naturals, for example, 77178888 + ... + 77178923.

It is an arithmetic number, because the mean of its divisors is an integer number (501662889).

Almost surely, 2^2778440598 is an apocalyptic number.

2778440598 is an abundant number, since it is smaller than the sum of its proper divisors (3241514070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2778440598 is a wasteful number, since it uses less digits than its factorization.

2778440598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154357819 (or 154357816 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The square root of 2778440598 is about 52710.9153591550. The cubic root of 2778440598 is about 1405.8329087897.

The spelling of 2778440598 in words is "two billion, seven hundred seventy-eight million, four hundred forty thousand, five hundred ninety-eight".