1809056005 has 8 divisors (see below), whose sum is σ = 2171101824. Its totient is φ = 1447088400.

The previous prime is 1809055999. The next prime is 1809056021. The reversal of 1809056005 is 5006509081.

1809056005 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1809056005 - 2⁵ = 1809055973 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 63120 + ... + 87190.

It is an arithmetic number, because the mean of its divisors is an integer number (271387728).

Almost surely, 2^1809056005 is an apocalyptic number.

It is an amenable number.

1809056005 is a deficient number, since it is larger than the sum of its proper divisors (362045819).

1809056005 is a wasteful number, since it uses less digits than its factorization.

1809056005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39107.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 1809056005 is about 42532.9990125314. Note that the first 3 decimals coincide. The cubic root of 1809056005 is about 1218.4770041887.

The spelling of 1809056005 in words is "one billion, eight hundred nine million, fifty-six thousand, five".