2944886891 has 2 divisors, whose sum is σ = 2944886892. Its totient is φ = 2944886890.

The previous prime is 2944886827. The next prime is 2944886909. The reversal of 2944886891 is 1986884492.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2944886891 - 2⁶ = 2944886827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2944886891.

It is not a weakly prime, because it can be changed into another prime (2944886801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1472443445 + 1472443446.

It is an arithmetic number, because the mean of its divisors is an integer number (1472443446).

Almost surely, 2^2944886891 is an apocalyptic number.

2944886891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2944886891 is an equidigital number, since it uses as much as digits as its factorization.

2944886891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7962624, while the sum is 59.

The square root of 2944886891 is about 54266.8120585685. The cubic root of 2944886891 is about 1433.3630548311.

The spelling of 2944886891 in words is "two billion, nine hundred forty-four million, eight hundred eighty-six thousand, eight hundred ninety-one".