2278381884 has 24 divisors (see below), whose sum is σ = 5596026240. Its totient is φ = 719488944.

The previous prime is 2278381877. The next prime is 2278381901. The reversal of 2278381884 is 4881838722.

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 7 ways as a sum of consecutive naturals, for example, 4996224 + ... + 4996679.

It is an arithmetic number, because the mean of its divisors is an integer number (233167760).

Almost surely, 2^2278381884 is an apocalyptic number.

It is an amenable number.

2278381884 is an abundant number, since it is smaller than the sum of its proper divisors (3317644356).

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

2278381884 is a wasteful number, since it uses less digits than its factorization.

2278381884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9992929 (or 9992927 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 51.

The square root of 2278381884 is about 47732.3986826558. The cubic root of 2278381884 is about 1315.8574376784.

The spelling of 2278381884 in words is "two billion, two hundred seventy-eight million, three hundred eighty-one thousand, eight hundred eighty-four".