2182813440 has 72 divisors (see below), whose sum is σ = 6971372688. Its totient is φ = 582082560.

The previous prime is 2182813439. The next prime is 2182813469. The reversal of 2182813440 is 443182812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280381 + ... + 288060.

Almost surely, 2^2182813440 is an apocalyptic number.

2182813440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2182813440 is an abundant number, since it is smaller than the sum of its proper divisors (4788559248).

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

2182813440 is an equidigital number, since it uses as much as digits as its factorization.

2182813440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568465 (or 568451 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 2182813440 is about 46720.5890373827. The cubic root of 2182813440 is about 1297.1958174825.

The spelling of 2182813440 in words is "two billion, one hundred eighty-two million, eight hundred thirteen thousand, four hundred forty".