2855197908 has 18 divisors (see below), whose sum is σ = 7217305914. Its totient is φ = 951732624.

The previous prime is 2855197901. The next prime is 2855197913. The reversal of 2855197908 is 8097915582.

It can be written as a sum of positive squares in only one way, i.e., 2499800004 + 355397904 = 49998^2 + 18852^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2855197901) 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 5 ways as a sum of consecutive naturals, for example, 39655491 + ... + 39655562.

Almost surely, 2^2855197908 is an apocalyptic number.

It is an amenable number.

2855197908 is an abundant number, since it is smaller than the sum of its proper divisors (4362108006).

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

2855197908 is a wasteful number, since it uses less digits than its factorization.

2855197908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79311063 (or 79311058 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 54.

The square root of 2855197908 is about 53434.0519519155. The cubic root of 2855197908 is about 1418.6613563148.

The spelling of 2855197908 in words is "two billion, eight hundred fifty-five million, one hundred ninety-seven thousand, nine hundred eight".