2991868379 has 2 divisors, whose sum is σ = 2991868380. Its totient is φ = 2991868378.

The previous prime is 2991868367. The next prime is 2991868447. The reversal of 2991868379 is 9738681992.

2991868379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2991868379 - 2¹⁶ = 2991802843 is a prime.

It is not a weakly prime, because it can be changed into another prime (2991868349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1495934189 + 1495934190.

It is an arithmetic number, because the mean of its divisors is an integer number (1495934190).

Almost surely, 2^2991868379 is an apocalyptic number.

2991868379 is a deficient number, since it is larger than the sum of its proper divisors (1).

2991868379 is an equidigital number, since it uses as much as digits as its factorization.

2991868379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11757312, while the sum is 62.

The square root of 2991868379 is about 54697.9741763806. The cubic root of 2991868379 is about 1440.9452992932.

The spelling of 2991868379 in words is "two billion, nine hundred ninety-one million, eight hundred sixty-eight thousand, three hundred seventy-nine".