18658316441 has 4 divisors (see below), whose sum is σ = 18658636800. Its totient is φ = 18657996084.

The previous prime is 18658316431. The next prime is 18658316489. The reversal of 18658316441 is 14461385681.

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 a cyclic number.

It is not a de Polignac number, because 18658316441 - 2¹⁸ = 18658054297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18658316431) 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, 45401 + ... + 198438.

It is an arithmetic number, because the mean of its divisors is an integer number (4664659200).

Almost surely, 2^18658316441 is an apocalyptic number.

It is an amenable number.

18658316441 is a deficient number, since it is larger than the sum of its proper divisors (320359).

18658316441 is an equidigital number, since it uses as much as digits as its factorization.

18658316441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320358.

The product of its digits is 552960, while the sum is 47.

The spelling of 18658316441 in words is "eighteen billion, six hundred fifty-eight million, three hundred sixteen thousand, four hundred forty-one".