18013258873 has 4 divisors (see below), whose sum is σ = 18013711248. Its totient is φ = 18012806500.

The previous prime is 18013258847. The next prime is 18013258891. The reversal of 18013258873 is 37885231081.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37885231081 = 2707 ⋅13995283.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18013258873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18013358873) 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, 160003 + ... + 248248.

It is an arithmetic number, because the mean of its divisors is an integer number (4503427812).

Almost surely, 2^18013258873 is an apocalyptic number.

It is an amenable number.

18013258873 is a deficient number, since it is larger than the sum of its proper divisors (452375).

18013258873 is an equidigital number, since it uses as much as digits as its factorization.

18013258873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452374.

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 18013258873 in words is "eighteen billion, thirteen million, two hundred fifty-eight thousand, eight hundred seventy-three".