18042650841 has 4 divisors (see below), whose sum is σ = 24056867792. Its totient is φ = 12028433892.

The previous prime is 18042650831. The next prime is 18042650861. The reversal of 18042650841 is 14805624081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 18042650841 - 2²¹ = 18040553689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18042650841.

It is not an unprimeable number, because it can be changed into a prime (18042650831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3007108471 + ... + 3007108476.

It is an arithmetic number, because the mean of its divisors is an integer number (6014216948).

Almost surely, 2^18042650841 is an apocalyptic number.

It is an amenable number.

18042650841 is a deficient number, since it is larger than the sum of its proper divisors (6014216951).

18042650841 is an equidigital number, since it uses as much as digits as its factorization.

18042650841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6014216950.

The product of its (nonzero) digits is 61440, while the sum is 39.

The spelling of 18042650841 in words is "eighteen billion, forty-two million, six hundred fifty thousand, eight hundred forty-one".