2045140209 has 12 divisors (see below), whose sum is σ = 3376104576. Its totient is φ = 1168651512.

The previous prime is 2045140189. The next prime is 2045140231. The reversal of 2045140209 is 9020415402.

2045140209 is a `hidden beast` number, since 2 + 0 + 451 + 4 + 0 + 209 = 666.

It is not a de Polignac number, because 2045140209 - 2⁷ = 2045140081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2045145209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16231209 + ... + 16231334.

It is an arithmetic number, because the mean of its divisors is an integer number (281342048).

Almost surely, 2^2045140209 is an apocalyptic number.

It is an amenable number.

2045140209 is a deficient number, since it is larger than the sum of its proper divisors (1330964367).

2045140209 is a wasteful number, since it uses less digits than its factorization.

2045140209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32462556 (or 32462553 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 2045140209 is about 45223.2264328851. The cubic root of 2045140209 is about 1269.3294678891.

The spelling of 2045140209 in words is "two billion, forty-five million, one hundred forty thousand, two hundred nine".