2182738278 has 64 divisors (see below), whose sum is σ = 5264663040. Its totient is φ = 589358592.

The previous prime is 2182738223. The next prime is 2182738301. The reversal of 2182738278 is 8728372812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342376 + ... + 348692.

It is an arithmetic number, because the mean of its divisors is an integer number (82260360).

Almost surely, 2^2182738278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2182738278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2632331520).

2182738278 is an abundant number, since it is smaller than the sum of its proper divisors (3081924762).

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

2182738278 is a wasteful number, since it uses less digits than its factorization.

2182738278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6781.

The product of its digits is 602112, while the sum is 48.

The square root of 2182738278 is about 46719.7846527571. The cubic root of 2182738278 is about 1297.1809282957.

The spelling of 2182738278 in words is "two billion, one hundred eighty-two million, seven hundred thirty-eight thousand, two hundred seventy-eight".