1805092045 has 8 divisors (see below), whose sum is σ = 2293528824. Its totient is φ = 1359128064.

The previous prime is 1805092031. The next prime is 1805092063. The reversal of 1805092045 is 5402905081.

It can be written as a sum of positive squares in 4 ways, for example, as 453647401 + 1351444644 = 21299^2 + 36762^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1805092045 - 2⁵ = 1805092013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1805092045.

It is a congruent number.

It is an unprimeable number.

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, 10618104 + ... + 10618273.

It is an arithmetic number, because the mean of its divisors is an integer number (286691103).

Almost surely, 2^1805092045 is an apocalyptic number.

It is an amenable number.

1805092045 is a deficient number, since it is larger than the sum of its proper divisors (488436779).

1805092045 is a wasteful number, since it uses less digits than its factorization.

1805092045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21236399.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 1805092045 is about 42486.3748159336. The cubic root of 1805092045 is about 1217.5863875389.

The spelling of 1805092045 in words is "one billion, eight hundred five million, ninety-two thousand, forty-five".