2221843540 has 48 divisors (see below), whose sum is σ = 5456449152. Its totient is φ = 744057216.

The previous prime is 2221843529. The next prime is 2221843567. The reversal of 2221843540 is 453481222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178519 + ... + 190558.

It is an arithmetic number, because the mean of its divisors is an integer number (113676024).

Almost surely, 2^2221843540 is an apocalyptic number.

2221843540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221843540 is an abundant number, since it is smaller than the sum of its proper divisors (3234605612).

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

2221843540 is a wasteful number, since it uses less digits than its factorization.

2221843540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369136 (or 369134 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 2221843540 is about 47136.4353764686. The cubic root of 2221843540 is about 1304.8817516399.

The spelling of 2221843540 in words is "two billion, two hundred twenty-one million, eight hundred forty-three thousand, five hundred forty".