1849889 has 12 divisors (see below), whose sum is σ = 2029884. Its totient is φ = 1684224.

The previous prime is 1849877. The next prime is 1849909. The reversal of 1849889 is 9889481.

It can be written as a sum of positive squares in 6 ways, for example, as 883600 + 966289 = 940^2 + 983^2 .

It is not a de Polignac number, because 1849889 - 2¹⁶ = 1784353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1849829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10607 + ... + 10779.

It is an arithmetic number, because the mean of its divisors is an integer number (169157).

2^1849889 is an apocalyptic number.

It is an amenable number.

1849889 is a deficient number, since it is larger than the sum of its proper divisors (179995).

1849889 is a wasteful number, since it uses less digits than its factorization.

1849889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 227 counting only the distinct ones).

The product of its digits is 165888, while the sum is 47.

The square root of 1849889 is about 1360.1062458499. The cubic root of 1849889 is about 122.7576473681.

The spelling of 1849889 in words is "one million, eight hundred forty-nine thousand, eight hundred eighty-nine".