2043506623 has 4 divisors (see below), whose sum is σ = 2044490688. Its totient is φ = 2042522560.

The previous prime is 2043506617. The next prime is 2043506723. The reversal of 2043506623 is 3266053402.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2043506623 - 2²¹ = 2041409471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043506723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488911 + ... + 493072.

It is an arithmetic number, because the mean of its divisors is an integer number (511122672).

Almost surely, 2^2043506623 is an apocalyptic number.

2043506623 is a deficient number, since it is larger than the sum of its proper divisors (984065).

2043506623 is an equidigital number, since it uses as much as digits as its factorization.

2043506623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984064.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 2043506623 is about 45205.1614641514. The cubic root of 2043506623 is about 1268.9914126334.

The spelling of 2043506623 in words is "two billion, forty-three million, five hundred six thousand, six hundred twenty-three".