2238091 has 2 divisors, whose sum is σ = 2238092. Its totient is φ = 2238090.

The previous prime is 2238079. The next prime is 2238109. The reversal of 2238091 is 1908322.

Together with next prime (2238109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2238091 - 2¹⁵ = 2205323 is a prime.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (2238011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119045 + 1119046.

It is an arithmetic number, because the mean of its divisors is an integer number (1119046).

2^2238091 is an apocalyptic number.

2238091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2238091 is an equidigital number, since it uses as much as digits as its factorization.

2238091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2238091 is about 1496.0250666349. The cubic root of 2238091 is about 130.8054724055.

The spelling of 2238091 in words is "two million, two hundred thirty-eight thousand, ninety-one".