18199541459 has 8 divisors (see below), whose sum is σ = 19856522352. Its totient is φ = 16542973440.

The previous prime is 18199541441. The next prime is 18199541491. The reversal of 18199541459 is 95414599181.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18199541459 - 2³² = 13904574163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18192541459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7154 + ... + 190919.

It is an arithmetic number, because the mean of its divisors is an integer number (2482065294).

Almost surely, 2^18199541459 is an apocalyptic number.

18199541459 is a deficient number, since it is larger than the sum of its proper divisors (1656980893).

18199541459 is a wasteful number, since it uses less digits than its factorization.

18199541459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206437.

The product of its digits is 2332800, while the sum is 56.

The spelling of 18199541459 in words is "eighteen billion, one hundred ninety-nine million, five hundred forty-one thousand, four hundred fifty-nine".