2108747939 has 16 divisors (see below), whose sum is σ = 2216332800. Its totient is φ = 2006344648.

The previous prime is 2108747917. The next prime is 2108747947. The reversal of 2108747939 is 9397478012.

It is a de Polignac number, because none of the positive numbers 2^k-2108747939 is a prime.

It is a super-3 number, since 3×2108747939³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2108747959) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3199592 + ... + 3200250.

It is an arithmetic number, because the mean of its divisors is an integer number (138520800).

Almost surely, 2^2108747939 is an apocalyptic number.

2108747939 is a deficient number, since it is larger than the sum of its proper divisors (107584861).

2108747939 is an frugal number, since it uses more digits than its factorization.

2108747939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991 (or 945 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 2108747939 is about 45921.1055942690. The cubic root of 2108747939 is about 1282.3548648376.

The spelling of 2108747939 in words is "two billion, one hundred eight million, seven hundred forty-seven thousand, nine hundred thirty-nine".