1878382224 has 140 divisors (see below), whose sum is σ = 5778135756. Its totient is φ = 589234176.

The previous prime is 1878382223. The next prime is 1878382267. The reversal of 1878382224 is 4222838781.

It can be written as a sum of positive squares in 2 ways, for example, as 1684281600 + 194100624 = 41040^2 + 13932^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1878382224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1878382223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 193552 + ... + 203024.

Almost surely, 2^1878382224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1878382224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2889067878).

1878382224 is an abundant number, since it is smaller than the sum of its proper divisors (3899753532).

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

1878382224 is an equidigital number, since it uses as much as digits as its factorization.

1878382224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9516 (or 9495 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 1878382224 is about 43340.3071516573. The cubic root of 1878382224 is about 1233.8470390502.

The spelling of 1878382224 in words is "one billion, eight hundred seventy-eight million, three hundred eighty-two thousand, two hundred twenty-four".