918000889563 has 4 divisors (see below), whose sum is σ = 1224001186088. Its totient is φ = 612000593040.

The previous prime is 918000889543. The next prime is 918000889579. The reversal of 918000889563 is 365988000819.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 918000889563 - 2²⁰ = 917999840987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (918000889543) 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, 153000148258 + ... + 153000148263.

It is an arithmetic number, because the mean of its divisors is an integer number (306000296522).

Almost surely, 2^918000889563 is an apocalyptic number.

918000889563 is a deficient number, since it is larger than the sum of its proper divisors (306000296525).

918000889563 is a wasteful number, since it uses less digits than its factorization.

918000889563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306000296524.

The product of its (nonzero) digits is 3732480, while the sum is 57.

The spelling of 918000889563 in words is "nine hundred eighteen billion, eight hundred eighty-nine thousand, five hundred sixty-three".