1881799 has 2 divisors, whose sum is σ = 1881800. Its totient is φ = 1881798.

The previous prime is 1881787. The next prime is 1881811. The reversal of 1881799 is 9971881.

It is a balanced prime because it is at equal distance from previous prime (1881787) and next prime (1881811).

It is an emirp because it is prime and its reverse (9971881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1881799 - 2⁵ = 1881767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1881749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940899 + 940900.

It is an arithmetic number, because the mean of its divisors is an integer number (940900).

2^1881799 is an apocalyptic number.

1881799 is a deficient number, since it is larger than the sum of its proper divisors (1).

1881799 is an equidigital number, since it uses as much as digits as its factorization.

1881799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 43.

The square root of 1881799 is about 1371.7867910138. The cubic root of 1881799 is about 123.4594708208.

The spelling of 1881799 in words is "one million, eight hundred eighty-one thousand, seven hundred ninety-nine".