18446341609 has 4 divisors (see below), whose sum is σ = 18449513104. Its totient is φ = 18443170116.

The previous prime is 18446341597. The next prime is 18446341621. The reversal of 18446341609 is 90614364481.

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 (18446341597) and next prime (18446341621).

It is a cyclic number.

It is not a de Polignac number, because 18446341609 - 2⁹ = 18446341097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18446345609) 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, 1577007 + ... + 1588660.

It is an arithmetic number, because the mean of its divisors is an integer number (4612378276).

Almost surely, 2^18446341609 is an apocalyptic number.

It is an amenable number.

18446341609 is a deficient number, since it is larger than the sum of its proper divisors (3171495).

18446341609 is an equidigital number, since it uses as much as digits as its factorization.

18446341609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171494.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 18446341609 in words is "eighteen billion, four hundred forty-six million, three hundred forty-one thousand, six hundred nine".