2044013243 has 4 divisors (see below), whose sum is σ = 2132883408. Its totient is φ = 1955143080.

The previous prime is 2044013239. The next prime is 2044013261. The reversal of 2044013243 is 3423104402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3423104402 = 2 ⋅1711552201.

It is a cyclic number.

It is not a de Polignac number, because 2044013243 - 2² = 2044013239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 88870141 = 2044013243 / (2 + 0 + 4 + 4 + 0 + 1 + 3 + 2 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2044013203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44435048 + ... + 44435093.

It is an arithmetic number, because the mean of its divisors is an integer number (533220852).

Almost surely, 2^2044013243 is an apocalyptic number.

2044013243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2044013243 is a deficient number, since it is larger than the sum of its proper divisors (88870165).

2044013243 is an equidigital number, since it uses as much as digits as its factorization.

2044013243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88870164.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 2044013243 is about 45210.7646805493. The cubic root of 2044013243 is about 1269.0962721432.

Adding to 2044013243 its reverse (3423104402), we get a palindrome (5467117645).

The spelling of 2044013243 in words is "two billion, forty-four million, thirteen thousand, two hundred forty-three".