2775959838 has 48 divisors (see below), whose sum is σ = 6313821696. Its totient is φ = 879766800.

The previous prime is 2775959833. The next prime is 2775959843. The reversal of 2775959838 is 8389595772.

2775959838 is a `hidden beast` number, since 2 + 7 + 7 + 5 + 9 + 598 + 38 = 666.

It is an interprime number because it is at equal distance from previous prime (2775959833) and next prime (2775959843).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2775959833) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 49063 + ... + 89213.

It is an arithmetic number, because the mean of its divisors is an integer number (131537952).

Almost surely, 2^2775959838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2775959838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3156910848).

2775959838 is an abundant number, since it is smaller than the sum of its proper divisors (3537861858).

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

2775959838 is a wasteful number, since it uses less digits than its factorization.

2775959838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40349 (or 40346 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 63.

The square root of 2775959838 is about 52687.3783557315. The cubic root of 2775959838 is about 1405.4143799543.

The spelling of 2775959838 in words is "two billion, seven hundred seventy-five million, nine hundred fifty-nine thousand, eight hundred thirty-eight".