2119208739 has 4 divisors (see below), whose sum is σ = 2825611656. Its totient is φ = 1412805824.

The previous prime is 2119208711. The next prime is 2119208743. The reversal of 2119208739 is 9378029112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2119208739 - 2⁹ = 2119208227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2119208739.

It is not an unprimeable number, because it can be changed into a prime (2119208939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353201454 + ... + 353201459.

It is an arithmetic number, because the mean of its divisors is an integer number (706402914).

Almost surely, 2^2119208739 is an apocalyptic number.

2119208739 is a deficient number, since it is larger than the sum of its proper divisors (706402917).

2119208739 is an equidigital number, since it uses as much as digits as its factorization.

2119208739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706402916.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 2119208739 is about 46034.8643855937. The cubic root of 2119208739 is about 1284.4718140932.

The spelling of 2119208739 in words is "two billion, one hundred nineteen million, two hundred eight thousand, seven hundred thirty-nine".