2005149 has 8 divisors (see below), whose sum is σ = 2724192. Its totient is φ = 1311440.

The previous prime is 2005139. The next prime is 2005151. The reversal of 2005149 is 9415002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2005149 - 2⁷ = 2005021 is a prime.

It is an Ulam number.

It is a Curzon number.

2005149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6147 + ... + 6464.

It is an arithmetic number, because the mean of its divisors is an integer number (340524).

2^2005149 is an apocalyptic number.

It is an amenable number.

2005149 is a deficient number, since it is larger than the sum of its proper divisors (719043).

2005149 is a wasteful number, since it uses less digits than its factorization.

2005149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12667.

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

The square root of 2005149 is about 1416.0328386023. The cubic root of 2005149 is about 126.1001345598.

It can be divided in two parts, 20051 and 49, that added together give a triangular number (20100 = T₂₀₀).

The spelling of 2005149 in words is "two million, five thousand, one hundred forty-nine".