18506968041 has 4 divisors (see below), whose sum is σ = 24675957392. Its totient is φ = 12337978692.

The previous prime is 18506968021. The next prime is 18506968061. The reversal of 18506968041 is 14086960581.

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 an interprime number because it is at equal distance from previous prime (18506968021) and next prime (18506968061).

It is not a de Polignac number, because 18506968041 - 2¹⁴ = 18506951657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18506968021) 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, 3084494671 + ... + 3084494676.

It is an arithmetic number, because the mean of its divisors is an integer number (6168989348).

Almost surely, 2^18506968041 is an apocalyptic number.

It is an amenable number.

18506968041 is a deficient number, since it is larger than the sum of its proper divisors (6168989351).

18506968041 is an equidigital number, since it uses as much as digits as its factorization.

18506968041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6168989350.

The product of its (nonzero) digits is 414720, while the sum is 48.

The spelling of 18506968041 in words is "eighteen billion, five hundred six million, nine hundred sixty-eight thousand, forty-one".