1855349 has 2 divisors, whose sum is σ = 1855350. Its totient is φ = 1855348.

The previous prime is 1855327. The next prime is 1855361. The reversal of 1855349 is 9435581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1036324 + 819025 = 1018^2 + 905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1855349 - 2⁸ = 1855093 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1855549) 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 as a sum of consecutive naturals, namely, 927674 + 927675.

It is an arithmetic number, because the mean of its divisors is an integer number (927675).

2^1855349 is an apocalyptic number.

It is an amenable number.

1855349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1855349 is an equidigital number, since it uses as much as digits as its factorization.

1855349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 35.

The square root of 1855349 is about 1362.1119630926. Note that the first 3 decimals coincide. The cubic root of 1855349 is about 122.8783029689.

The spelling of 1855349 in words is "one million, eight hundred fifty-five thousand, three hundred forty-nine".