2109249045 has 32 divisors (see below), whose sum is σ = 3797260800. Its totient is φ = 1110687552.

The previous prime is 2109249031. The next prime is 2109249061. The reversal of 2109249045 is 5409429012.

It is not a de Polignac number, because 2109249045 - 2⁵ = 2109249013 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88222 + ... + 109551.

It is an arithmetic number, because the mean of its divisors is an integer number (118664400).

Almost surely, 2^2109249045 is an apocalyptic number.

It is an amenable number.

2109249045 is a deficient number, since it is larger than the sum of its proper divisors (1688011755).

2109249045 is a wasteful number, since it uses less digits than its factorization.

2109249045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197866 (or 197860 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2109249045 is about 45926.5614323563. The cubic root of 2109249045 is about 1282.4564329785.

The spelling of 2109249045 in words is "two billion, one hundred nine million, two hundred forty-nine thousand, forty-five".