2108402009 has 8 divisors (see below), whose sum is σ = 2410552320. Its totient is φ = 1806489216.

The previous prime is 2108401949. The next prime is 2108402011. The reversal of 2108402009 is 9002048012.

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

It is a de Polignac number, because none of the positive numbers 2^k-2108402009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2108402099) 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 7 ways as a sum of consecutive naturals, for example, 39929 + ... + 76230.

It is an arithmetic number, because the mean of its divisors is an integer number (301319040).

Almost surely, 2^2108402009 is an apocalyptic number.

It is an amenable number.

2108402009 is a deficient number, since it is larger than the sum of its proper divisors (302150311).

2108402009 is a wasteful number, since it uses less digits than its factorization.

2108402009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118759.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2108402009 is about 45917.3388710626. The cubic root of 2108402009 is about 1282.2847396116.

The spelling of 2108402009 in words is "two billion, one hundred eight million, four hundred two thousand, nine".