18020002089 has 8 divisors (see below), whose sum is σ = 24082160032. Its totient is φ = 11985589440.

The previous prime is 18020002019. The next prime is 18020002109. The reversal of 18020002089 is 98020002081.

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

It is not a de Polignac number, because 18020002089 - 2⁹ = 18020001577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18020002019) 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, 6934807 + ... + 6937404.

It is an arithmetic number, because the mean of its divisors is an integer number (3010270004).

Almost surely, 2^18020002089 is an apocalyptic number.

It is an amenable number.

18020002089 is a deficient number, since it is larger than the sum of its proper divisors (6062157943).

18020002089 is a wasteful number, since it uses less digits than its factorization.

18020002089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13872647.

The product of its (nonzero) digits is 2304, while the sum is 30.

The spelling of 18020002089 in words is "eighteen billion, twenty million, two thousand, eighty-nine".