918822380 has 24 divisors (see below), whose sum is σ = 2205174048. Its totient is φ = 315024768.

The previous prime is 918822379. The next prime is 918822391. The reversal of 918822380 is 83228819.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3281369 + ... + 3281648.

It is an arithmetic number, because the mean of its divisors is an integer number (91882252).

Almost surely, 2^918822380 is an apocalyptic number.

It is an amenable number.

918822380 is an abundant number, since it is smaller than the sum of its proper divisors (1286351668).

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

918822380 is a wasteful number, since it uses less digits than its factorization.

918822380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6563033 (or 6563031 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 918822380 is about 30312.0830692976. The cubic root of 918822380 is about 972.1736707522.

The spelling of 918822380 in words is "nine hundred eighteen million, eight hundred twenty-two thousand, three hundred eighty".