1808709413 has 24 divisors (see below), whose sum is σ = 2154873600. Its totient is φ = 1513034208.

The previous prime is 1808709403. The next prime is 1808709431. The reversal of 1808709413 is 3149078081.

It is not a de Polignac number, because 1808709413 - 2⁸ = 1808709157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808709403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1010123 + ... + 1011911.

It is an arithmetic number, because the mean of its divisors is an integer number (89786400).

Almost surely, 2^1808709413 is an apocalyptic number.

It is an amenable number.

1808709413 is a deficient number, since it is larger than the sum of its proper divisors (346164187).

1808709413 is a wasteful number, since it uses less digits than its factorization.

1808709413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2289 (or 2282 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 1808709413 is about 42528.9244279702. The cubic root of 1808709413 is about 1218.3991843472.

The spelling of 1808709413 in words is "one billion, eight hundred eight million, seven hundred nine thousand, four hundred thirteen".