1850413 has 2 divisors, whose sum is σ = 1850414. Its totient is φ = 1850412.

The previous prime is 1850369. The next prime is 1850423. The reversal of 1850413 is 3140581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1205604 + 644809 = 1098^2 + 803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1850413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1850423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 925206 + 925207.

It is an arithmetic number, because the mean of its divisors is an integer number (925207).

2^1850413 is an apocalyptic number.

It is an amenable number.

1850413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1850413 is an equidigital number, since it uses as much as digits as its factorization.

1850413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1850413 is about 1360.2988642207. The cubic root of 1850413 is about 122.7692370607.

Adding to 1850413 its reverse (3140581), we get a palindrome (4990994).

The spelling of 1850413 in words is "one million, eight hundred fifty thousand, four hundred thirteen".