1881343 has 2 divisors, whose sum is σ = 1881344. Its totient is φ = 1881342.

The previous prime is 1881329. The next prime is 1881349. The reversal of 1881343 is 3431881.

It is a strong prime.

It is an emirp because it is prime and its reverse (3431881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1881343 - 2⁵ = 1881311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1881349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940671 + 940672.

It is an arithmetic number, because the mean of its divisors is an integer number (940672).

2^1881343 is an apocalyptic number.

1881343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1881343 is an equidigital number, since it uses as much as digits as its factorization.

1881343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 28.

The square root of 1881343 is about 1371.6205743572. The cubic root of 1881343 is about 123.4494977282.

The spelling of 1881343 in words is "one million, eight hundred eighty-one thousand, three hundred forty-three".