1809480072 has 32 divisors (see below), whose sum is σ = 4619952000. Its totient is φ = 590326464.

The previous prime is 1809480061. The next prime is 1809480073. The reversal of 1809480072 is 2700849081.

It is a self number, because there is not a number n which added to its sum of digits gives 1809480072.

It is not an unprimeable number, because it can be changed into a prime (1809480073) by changing a digit.

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, 800947 + ... + 803202.

It is an arithmetic number, because the mean of its divisors is an integer number (144373500).

Almost surely, 2^1809480072 is an apocalyptic number.

1809480072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1809480072 is an abundant number, since it is smaller than the sum of its proper divisors (2810471928).

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

1809480072 is a wasteful number, since it uses less digits than its factorization.

1809480072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604205 (or 1604201 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 1809480072 is about 42537.9838732397. The cubic root of 1809480072 is about 1218.5722058696.

The spelling of 1809480072 in words is "one billion, eight hundred nine million, four hundred eighty thousand, seventy-two".