1808145344 has 28 divisors (see below), whose sum is σ = 3589553400. Its totient is φ = 903691008.

The previous prime is 1808145323. The next prime is 1808145371. The reversal of 1808145344 is 4435418081.

It is a junction number, because it is equal to n+sod(n) for n = 1808145298 and 1808145307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204242 + ... + 212910.

Almost surely, 2^1808145344 is an apocalyptic number.

It is an amenable number.

1808145344 is a deficient number, since it is larger than the sum of its proper divisors (1781408056).

1808145344 is an equidigital number, since it uses as much as digits as its factorization.

1808145344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11940 (or 11930 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 1808145344 is about 42522.2923182653. The cubic root of 1808145344 is about 1218.2725134254.

The spelling of 1808145344 in words is "one billion, eight hundred eight million, one hundred forty-five thousand, three hundred forty-four".