1808847312 has 20 divisors (see below), whose sum is σ = 4672855680. Its totient is φ = 602949088.

The previous prime is 1808847289. The next prime is 1808847319. The reversal of 1808847312 is 2137488081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808847319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18842112 + ... + 18842207.

It is an arithmetic number, because the mean of its divisors is an integer number (233642784).

Almost surely, 2^1808847312 is an apocalyptic number.

1808847312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1808847312 is an abundant number, since it is smaller than the sum of its proper divisors (2864008368).

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

1808847312 is a wasteful number, since it uses less digits than its factorization.

1808847312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37684330 (or 37684324 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 1808847312 is about 42530.5456348728. The cubic root of 1808847312 is about 1218.4301478172.

The spelling of 1808847312 in words is "one billion, eight hundred eight million, eight hundred forty-seven thousand, three hundred twelve".