2045109 has 16 divisors (see below), whose sum is σ = 3078720. Its totient is φ = 1196160.

The previous prime is 2045093. The next prime is 2045129. The reversal of 2045109 is 9015402.

It is not a de Polignac number, because 2045109 - 2⁴ = 2045093 is a prime.

It is an Ulam 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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112 + ... + 2025.

It is an arithmetic number, because the mean of its divisors is an integer number (192420).

2^2045109 is an apocalyptic number.

2045109 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2045109 is a deficient number, since it is larger than the sum of its proper divisors (1033611).

2045109 is a wasteful number, since it uses less digits than its factorization.

2045109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2045109 is about 1430.0730750560. The cubic root of 2045109 is about 126.9323011167.

The spelling of 2045109 in words is "two million, forty-five thousand, one hundred nine".