921518848 has 144 divisors (see below), whose sum is σ = 2060352000. Its totient is φ = 409522176.

The previous prime is 921518839. The next prime is 921518909. The reversal of 921518848 is 848815129.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 921518798 and 921518807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6629563 + ... + 6629701.

It is an arithmetic number, because the mean of its divisors is an integer number (14308000).

Almost surely, 2^921518848 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 921518848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1030176000).

921518848 is an abundant number, since it is smaller than the sum of its proper divisors (1138833152).

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

921518848 is a wasteful number, since it uses less digits than its factorization.

921518848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 236 counting only the distinct ones).

The product of its digits is 184320, while the sum is 46.

The square root of 921518848 is about 30356.5289188339. The cubic root of 921518848 is about 973.1237546306.

The spelling of 921518848 in words is "nine hundred twenty-one million, five hundred eighteen thousand, eight hundred forty-eight".