1856328080 has 40 divisors (see below), whose sum is σ = 4347491832. Its totient is φ = 737106944.

The previous prime is 1856328037. The next prime is 1856328083. The reversal of 1856328080 is 808236581.

It can be written as a sum of positive squares in 4 ways, for example, as 107081104 + 1749246976 = 10348^2 + 41824^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1856328083) 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, 73727 + ... + 95646.

Almost surely, 2^1856328080 is an apocalyptic number.

1856328080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1856328080 is an abundant number, since it is smaller than the sum of its proper divisors (2491163752).

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

1856328080 is a wasteful number, since it uses less digits than its factorization.

1856328080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169523 (or 169517 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 1856328080 is about 43085.1259717318. The cubic root of 1856328080 is about 1228.9991373374. Note that the first 3 decimals are identical.

The spelling of 1856328080 in words is "one billion, eight hundred fifty-six million, three hundred twenty-eight thousand, eighty".