918861080 has 64 divisors (see below), whose sum is σ = 2139367680. Its totient is φ = 354816000.

The previous prime is 918861011. The next prime is 918861089. The reversal of 918861080 is 80168819.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918861089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 764480 + ... + 765680.

It is an arithmetic number, because the mean of its divisors is an integer number (33427620).

Almost surely, 2^918861080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 918861080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1069683840).

918861080 is an abundant number, since it is smaller than the sum of its proper divisors (1220506600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

918861080 is a wasteful number, since it uses less digits than its factorization.

918861080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860 (or 1856 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 41.

The square root of 918861080 is about 30312.7214218717. The cubic root of 918861080 is about 972.1873195972.

The spelling of 918861080 in words is "nine hundred eighteen million, eight hundred sixty-one thousand, eighty".