2119971907 has 8 divisors (see below), whose sum is σ = 2128893984. Its totient is φ = 2111061888.

The previous prime is 2119971829. The next prime is 2119971923. The reversal of 2119971907 is 7091799112.

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

It is a cyclic number.

It is not a de Polignac number, because 2119971907 - 2⁷ = 2119971779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2119971977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546858 + ... + 550720.

It is an arithmetic number, because the mean of its divisors is an integer number (266111748).

Almost surely, 2^2119971907 is an apocalyptic number.

2119971907 is a deficient number, since it is larger than the sum of its proper divisors (8922077).

2119971907 is a wasteful number, since it uses less digits than its factorization.

2119971907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6029.

The product of its (nonzero) digits is 71442, while the sum is 46.

The square root of 2119971907 is about 46043.1526613893. The cubic root of 2119971907 is about 1284.6259832916.

The spelling of 2119971907 in words is "two billion, one hundred nineteen million, nine hundred seventy-one thousand, nine hundred seven".