2891963 has 2 divisors, whose sum is σ = 2891964. Its totient is φ = 2891962.

The previous prime is 2891929. The next prime is 2891981. The reversal of 2891963 is 3691982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2891963 - 2⁶ = 2891899 is a prime.

It is not a weakly prime, because it can be changed into another prime (2891263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1445981 + 1445982.

It is an arithmetic number, because the mean of its divisors is an integer number (1445982).

2^2891963 is an apocalyptic number.

2891963 is a deficient number, since it is larger than the sum of its proper divisors (1).

2891963 is an equidigital number, since it uses as much as digits as its factorization.

2891963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 2891963 is about 1700.5772549343. The cubic root of 2891963 is about 142.4724559464.

It can be divided in two parts, 28919 and 63, that added together give a palindrome (28982).

The spelling of 2891963 in words is "two million, eight hundred ninety-one thousand, nine hundred sixty-three".