2043500605 has 4 divisors (see below), whose sum is σ = 2452200732. Its totient is φ = 1634800480.

The previous prime is 2043500593. The next prime is 2043500617. The reversal of 2043500605 is 5060053402.

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

It is an interprime number because it is at equal distance from previous prime (2043500593) and next prime (2043500617).

It can be written as a sum of positive squares in 2 ways, for example, as 1333491289 + 710009316 = 36517^2 + 26646^2 .

It is not a de Polignac number, because 2043500605 - 2⁹ = 2043500093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2043500605.

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, 204350056 + ... + 204350065.

It is an arithmetic number, because the mean of its divisors is an integer number (613050183).

Almost surely, 2^2043500605 is an apocalyptic number.

It is an amenable number.

2043500605 is a deficient number, since it is larger than the sum of its proper divisors (408700127).

2043500605 is an equidigital number, since it uses as much as digits as its factorization.

2043500605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408700126.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 2043500605 is about 45205.0949009069. The cubic root of 2043500605 is about 1268.9901669319.

The spelling of 2043500605 in words is "two billion, forty-three million, five hundred thousand, six hundred five".