2045169 has 20 divisors (see below), whose sum is σ = 3492544. Its totient is φ = 1168344.

The previous prime is 2045129. The next prime is 2045177. The reversal of 2045169 is 9615402.

It is not a de Polignac number, because 2045169 - 2¹¹ = 2043121 is a prime.

It is a super-2 number, since 2×2045169² = 8365432477122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

2045169 is a lucky 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 19 ways as a sum of consecutive naturals, for example, 1237 + ... + 2370.

2^2045169 is an apocalyptic number.

It is an amenable number.

2045169 is a deficient number, since it is larger than the sum of its proper divisors (1447375).

2045169 is an equidigital number, since it uses as much as digits as its factorization.

2045169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3626 (or 3617 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2045169 is about 1430.0940528511. The cubic root of 2045169 is about 126.9335424301.

The spelling of 2045169 in words is "two million, forty-five thousand, one hundred sixty-nine".