1818656328 has 32 divisors (see below), whose sum is σ = 4814091360. Its totient is φ = 570558720.

The previous prime is 1818656327. The next prime is 1818656341. The reversal of 1818656328 is 8236568181.

It is not an unprimeable number, because it can be changed into a prime (1818656321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2228338 + ... + 2229153.

It is an arithmetic number, because the mean of its divisors is an integer number (150440355).

Almost surely, 2^1818656328 is an apocalyptic number.

It is an amenable number.

1818656328 is an abundant number, since it is smaller than the sum of its proper divisors (2995435032).

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

1818656328 is a wasteful number, since it uses less digits than its factorization.

1818656328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4457517 (or 4457513 counting only the distinct ones).

The product of its digits is 552960, while the sum is 48.

The square root of 1818656328 is about 42645.7070289613. The cubic root of 1818656328 is about 1220.6286127135.

The spelling of 1818656328 in words is "one billion, eight hundred eighteen million, six hundred fifty-six thousand, three hundred twenty-eight".