2119947379 has 16 divisors (see below), whose sum is σ = 2452091616. Its totient is φ = 1811353600.

The previous prime is 2119947367. The next prime is 2119947397. The reversal of 2119947379 is 9737499112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2119947379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2119948379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134859 + ... + 149755.

It is an arithmetic number, because the mean of its divisors is an integer number (153255726).

Almost surely, 2^2119947379 is an apocalyptic number.

2119947379 is a deficient number, since it is larger than the sum of its proper divisors (332144237).

2119947379 is a wasteful number, since it uses less digits than its factorization.

2119947379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15686.

The product of its digits is 857304, while the sum is 52.

The square root of 2119947379 is about 46042.8863017948. The cubic root of 2119947379 is about 1284.6210289135.

The spelling of 2119947379 in words is "two billion, one hundred nineteen million, nine hundred forty-seven thousand, three hundred seventy-nine".