2240643445 has 4 divisors (see below), whose sum is σ = 2688772140. Its totient is φ = 1792514752.

The previous prime is 2240643437. The next prime is 2240643467. The reversal of 2240643445 is 5443460422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1349680644 + 890962801 = 36738^2 + 29849^2 .

It is a cyclic number.

It is not a de Polignac number, because 2240643445 - 2³ = 2240643437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2240643445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224064340 + ... + 224064349.

It is an arithmetic number, because the mean of its divisors is an integer number (672193035).

Almost surely, 2^2240643445 is an apocalyptic number.

It is an amenable number.

2240643445 is a deficient number, since it is larger than the sum of its proper divisors (448128695).

2240643445 is an equidigital number, since it uses as much as digits as its factorization.

2240643445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448128694.

The product of its (nonzero) digits is 92160, while the sum is 34.

The square root of 2240643445 is about 47335.4354052015. The cubic root of 2240643445 is about 1308.5517948946.

The spelling of 2240643445 in words is "two billion, two hundred forty million, six hundred forty-three thousand, four hundred forty-five".