18601440803 has 8 divisors (see below), whose sum is σ = 20304278976. Its totient is φ = 16900569000.

The previous prime is 18601440773. The next prime is 18601440811. The reversal of 18601440803 is 30804410681.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18601440803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18601440853) 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, 471773 + ... + 509678.

It is an arithmetic number, because the mean of its divisors is an integer number (2538034872).

Almost surely, 2^18601440803 is an apocalyptic number.

18601440803 is a deficient number, since it is larger than the sum of its proper divisors (1702838173).

18601440803 is a wasteful number, since it uses less digits than its factorization.

18601440803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983185.

The product of its (nonzero) digits is 18432, while the sum is 35.

The spelling of 18601440803 in words is "eighteen billion, six hundred one million, four hundred forty thousand, eight hundred three".