2891893 has 2 divisors, whose sum is σ = 2891894. Its totient is φ = 2891892.

The previous prime is 2891891. The next prime is 2891899. The reversal of 2891893 is 3981982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2683044 + 208849 = 1638^2 + 457^2 .

It is a cyclic number.

It is not a de Polignac number, because 2891893 - 2¹ = 2891891 is a prime.

Together with 2891891, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2891891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1445946 + 1445947.

It is an arithmetic number, because the mean of its divisors is an integer number (1445947).

2^2891893 is an apocalyptic number.

It is an amenable number.

2891893 is a deficient number, since it is larger than the sum of its proper divisors (1).

2891893 is an equidigital number, since it uses as much as digits as its factorization.

2891893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 2891893 is about 1700.5566735631. The cubic root of 2891893 is about 142.4713064213.

The spelling of 2891893 in words is "two million, eight hundred ninety-one thousand, eight hundred ninety-three".