1845049 has 2 divisors, whose sum is σ = 1845050. Its totient is φ = 1845048.

The previous prime is 1845047. The next prime is 1845073. The reversal of 1845049 is 9405481.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1841449 + 3600 = 1357^2 + 60^2 .

It is an emirp because it is prime and its reverse (9405481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1845049 - 2¹ = 1845047 is a prime.

Together with 1845047, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1845049.

It is not a weakly prime, because it can be changed into another prime (1845047) 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, 922524 + 922525.

It is an arithmetic number, because the mean of its divisors is an integer number (922525).

2^1845049 is an apocalyptic number.

It is an amenable number.

1845049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1845049 is an equidigital number, since it uses as much as digits as its factorization.

1845049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1845049 is about 1358.3258077501. The cubic root of 1845049 is about 122.6504939230.

The spelling of 1845049 in words is "one million, eight hundred forty-five thousand, forty-nine".