918468889 has 8 divisors (see below), whose sum is σ = 1023228360. Its totient is φ = 818582016.

The previous prime is 918468883. The next prime is 918468919. The reversal of 918468889 is 988864819.

It can be written as a sum of positive squares in 4 ways, for example, as 253860489 + 664608400 = 15933^2 + 25780^2 .

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 918468889 - 2⁹ = 918468377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (918468883) 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, 1217752 + ... + 1218505.

It is an arithmetic number, because the mean of its divisors is an integer number (127903545).

Almost surely, 2^918468889 is an apocalyptic number.

It is an amenable number.

918468889 is a deficient number, since it is larger than the sum of its proper divisors (104759471).

918468889 is a wasteful number, since it uses less digits than its factorization.

918468889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436299.

The product of its digits is 7962624, while the sum is 61.

The square root of 918468889 is about 30306.2516487935. The cubic root of 918468889 is about 972.0489826258.

The spelling of 918468889 in words is "nine hundred eighteen million, four hundred sixty-eight thousand, eight hundred eighty-nine".