1806744080 has 40 divisors (see below), whose sum is σ = 4345536600. Its totient is φ = 697776128.

The previous prime is 1806744053. The next prime is 1806744091. The reversal of 1806744080 is 804476081.

It can be written as a sum of positive squares in 4 ways, for example, as 16777216 + 1789966864 = 4096^2 + 42308^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387065 + ... + 391704.

It is an arithmetic number, because the mean of its divisors is an integer number (108638415).

Almost surely, 2^1806744080 is an apocalyptic number.

1806744080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1806744080 is an abundant number, since it is smaller than the sum of its proper divisors (2538792520).

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

1806744080 is a wasteful number, since it uses less digits than its factorization.

1806744080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778811 (or 778805 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 1806744080 is about 42505.8123084361. The cubic root of 1806744080 is about 1217.9577226184.

The spelling of 1806744080 in words is "one billion, eight hundred six million, seven hundred forty-four thousand, eighty".