1816128832 has 56 divisors (see below), whose sum is σ = 4335515840. Its totient is φ = 737372160.

The previous prime is 1816128827. The next prime is 1816128859. The reversal of 1816128832 is 2388216181.

It is a tau number, because it is divible by the number of its divisors (56).

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, 98169 + ... + 115192.

Almost surely, 2^1816128832 is an apocalyptic number.

It is an amenable number.

1816128832 is an abundant number, since it is smaller than the sum of its proper divisors (2519387008).

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

1816128832 is a wasteful number, since it uses less digits than its factorization.

1816128832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213399 (or 213389 counting only the distinct ones).

The product of its digits is 36864, while the sum is 40.

The square root of 1816128832 is about 42616.0630748548. The cubic root of 1816128832 is about 1220.0628902454.

The spelling of 1816128832 in words is "one billion, eight hundred sixteen million, one hundred twenty-eight thousand, eight hundred thirty-two".