918564930 has 48 divisors (see below), whose sum is σ = 2393763840. Its totient is φ = 244387104.

The previous prime is 918564929. The next prime is 918564949. The reversal of 918564930 is 39465819.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28351 + ... + 51389.

It is an arithmetic number, because the mean of its divisors is an integer number (49870080).

Almost surely, 2^918564930 is an apocalyptic number.

918564930 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

918564930 is an abundant number, since it is smaller than the sum of its proper divisors (1475198910).

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

918564930 is a wasteful number, since it uses less digits than its factorization.

918564930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23495 (or 23492 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 918564930 is about 30307.8361154339. The cubic root of 918564930 is about 972.0828626711.

The spelling of 918564930 in words is "nine hundred eighteen million, five hundred sixty-four thousand, nine hundred thirty".