2045149 has 4 divisors (see below), whose sum is σ = 2065500. Its totient is φ = 2024800.

The previous prime is 2045129. The next prime is 2045177. The reversal of 2045149 is 9415402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1397124 + 648025 = 1182^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045149 - 2¹¹ = 2043101 is a prime.

It is a Duffinian number.

2045149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045129) 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, 10024 + ... + 10225.

It is an arithmetic number, because the mean of its divisors is an integer number (516375).

2^2045149 is an apocalyptic number.

It is an amenable number.

2045149 is a deficient number, since it is larger than the sum of its proper divisors (20351).

2045149 is a wasteful number, since it uses less digits than its factorization.

2045149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20350.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2045149 is about 1430.0870602869. The cubic root of 2045149 is about 126.9331286617.

The spelling of 2045149 in words is "two million, forty-five thousand, one hundred forty-nine".