2778358838 has 8 divisors (see below), whose sum is σ = 4182370200. Its totient is φ = 1384235440.

The previous prime is 2778358837. The next prime is 2778358859. The reversal of 2778358838 is 8388538772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778358831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2471288 + ... + 2472411.

It is an arithmetic number, because the mean of its divisors is an integer number (522796275).

Almost surely, 2^2778358838 is an apocalyptic number.

2778358838 is a deficient number, since it is larger than the sum of its proper divisors (1404011362).

2778358838 is a wasteful number, since it uses less digits than its factorization.

2778358838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4943982.

The product of its digits is 18063360, while the sum is 59.

The square root of 2778358838 is about 52710.1398025086. The cubic root of 2778358838 is about 1405.8191190370.

The spelling of 2778358838 in words is "two billion, seven hundred seventy-eight million, three hundred fifty-eight thousand, eight hundred thirty-eight".