1850045 has 4 divisors (see below), whose sum is σ = 2220060. Its totient is φ = 1480032.

The previous prime is 1850041. The next prime is 1850053. The reversal of 1850045 is 5400581.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1267876 + 582169 = 1126^2 + 763^2 .

It is a cyclic number.

It is not a de Polignac number, because 1850045 - 2² = 1850041 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1850045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1850041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185000 + ... + 185009.

It is an arithmetic number, because the mean of its divisors is an integer number (555015).

2^1850045 is an apocalyptic number.

It is an amenable number.

1850045 is a deficient number, since it is larger than the sum of its proper divisors (370015).

1850045 is an equidigital number, since it uses as much as digits as its factorization.

1850045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370014.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1850045 is about 1360.1635931019. The cubic root of 1850045 is about 122.7610979633.

The spelling of 1850045 in words is "one million, eight hundred fifty thousand, forty-five".