2108994945 has 32 divisors (see below), whose sum is σ = 3488701440. Its totient is φ = 1086808320.

The previous prime is 2108994929. The next prime is 2108994967. The reversal of 2108994945 is 5494998012.

It is not a de Polignac number, because 2108994945 - 2⁴ = 2108994929 is a prime.

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, 326487 + ... + 332883.

It is an arithmetic number, because the mean of its divisors is an integer number (109021920).

Almost surely, 2^2108994945 is an apocalyptic number.

It is an amenable number.

2108994945 is a deficient number, since it is larger than the sum of its proper divisors (1379706495).

2108994945 is a wasteful number, since it uses less digits than its factorization.

2108994945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7145.

The product of its (nonzero) digits is 933120, while the sum is 51.

The square root of 2108994945 is about 45923.7949760252. The cubic root of 2108994945 is about 1282.4049319846.

The spelling of 2108994945 in words is "two billion, one hundred eight million, nine hundred ninety-four thousand, nine hundred forty-five".