918000820 has 24 divisors (see below), whose sum is σ = 2103056928. Its totient is φ = 333818400.

The previous prime is 918000803. The next prime is 918000869. The reversal of 918000820 is 28000819.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2086146 + ... + 2086585.

It is an arithmetic number, because the mean of its divisors is an integer number (87627372).

Almost surely, 2^918000820 is an apocalyptic number.

It is an amenable number.

918000820 is an abundant number, since it is smaller than the sum of its proper divisors (1185056108).

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

918000820 is a wasteful number, since it uses less digits than its factorization.

918000820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4172751 (or 4172749 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 918000820 is about 30298.5283470996. The cubic root of 918000820 is about 971.8838297602.

The spelling of 918000820 in words is "nine hundred eighteen million, eight hundred twenty", and thus it is an aban number.