18441793843 has 8 divisors (see below), whose sum is σ = 20459309760. Its totient is φ = 16481109480.

The previous prime is 18441793831. The next prime is 18441793847. The reversal of 18441793843 is 34839714481.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18441793843 - 2¹³ = 18441785651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18441793847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14207205 + ... + 14208502.

It is an arithmetic number, because the mean of its divisors is an integer number (2557413720).

Almost surely, 2^18441793843 is an apocalyptic number.

18441793843 is a deficient number, since it is larger than the sum of its proper divisors (2017515917).

18441793843 is a wasteful number, since it uses less digits than its factorization.

18441793843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28415777.

The product of its digits is 2322432, while the sum is 52.

The spelling of 18441793843 in words is "eighteen billion, four hundred forty-one million, seven hundred ninety-three thousand, eight hundred forty-three".