2240165605 has 4 divisors (see below), whose sum is σ = 2688198732. Its totient is φ = 1792132480.

The previous prime is 2240165591. The next prime is 2240165611. The reversal of 2240165605 is 5065610422.

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 268894404 + 1971271201 = 16398^2 + 44399^2 .

It is not a de Polignac number, because 2240165605 - 2³¹ = 92681957 is a prime.

It is a super-3 number, since 3×2240165605³ (a number of 29 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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, 224016556 + ... + 224016565.

It is an arithmetic number, because the mean of its divisors is an integer number (672049683).

Almost surely, 2^2240165605 is an apocalyptic number.

It is an amenable number.

2240165605 is a deficient number, since it is larger than the sum of its proper divisors (448033127).

2240165605 is an equidigital number, since it uses as much as digits as its factorization.

2240165605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448033126.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 2240165605 is about 47330.3877545917. The cubic root of 2240165605 is about 1308.4587676223.

The spelling of 2240165605 in words is "two billion, two hundred forty million, one hundred sixty-five thousand, six hundred five".