1849145 has 4 divisors (see below), whose sum is σ = 2218980. Its totient is φ = 1479312.

The previous prime is 1849109. The next prime is 1849147. The reversal of 1849145 is 5419481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5419481 = 17 ⋅318793.

It can be written as a sum of positive squares in 2 ways, for example, as 906304 + 942841 = 952^2 + 971^2 .

It is a cyclic number.

It is not a de Polignac number, because 1849145 - 2¹² = 1845049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1849147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184910 + ... + 184919.

It is an arithmetic number, because the mean of its divisors is an integer number (554745).

2^1849145 is an apocalyptic number.

It is an amenable number.

1849145 is a deficient number, since it is larger than the sum of its proper divisors (369835).

1849145 is an equidigital number, since it uses as much as digits as its factorization.

1849145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369834.

The product of its digits is 5760, while the sum is 32.

The square root of 1849145 is about 1359.8327102993. The cubic root of 1849145 is about 122.7411880136.

The spelling of 1849145 in words is "one million, eight hundred forty-nine thousand, one hundred forty-five".