18302812889 has 8 divisors (see below), whose sum is σ = 18938330880. Its totient is φ = 17670114000.

The previous prime is 18302812807. The next prime is 18302812933. The reversal of 18302812889 is 98821820381.

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 18302812889 - 2²⁸ = 18034377433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18302812589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 691562 + ... + 717539.

It is an arithmetic number, because the mean of its divisors is an integer number (2367291360).

Almost surely, 2^18302812889 is an apocalyptic number.

It is an amenable number.

18302812889 is a deficient number, since it is larger than the sum of its proper divisors (635517991).

18302812889 is a wasteful number, since it uses less digits than its factorization.

18302812889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409551.

The product of its (nonzero) digits is 442368, while the sum is 50.

The spelling of 18302812889 in words is "eighteen billion, three hundred two million, eight hundred twelve thousand, eight hundred eighty-nine".