2148891 has 8 divisors (see below), whose sum is σ = 2908224. Its totient is φ = 1411080.

The previous prime is 2148877. The next prime is 2148893. The reversal of 2148891 is 1988412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2148891 - 2⁹ = 2148379 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2148893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5145 + ... + 5546.

It is an arithmetic number, because the mean of its divisors is an integer number (363528).

2^2148891 is an apocalyptic number.

2148891 is a deficient number, since it is larger than the sum of its proper divisors (759333).

2148891 is a wasteful number, since it uses less digits than its factorization.

2148891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10761.

The product of its digits is 4608, while the sum is 33.

The square root of 2148891 is about 1465.9096152219. The cubic root of 2148891 is about 129.0440928533.

The spelling of 2148891 in words is "two million, one hundred forty-eight thousand, eight hundred ninety-one".