1881944033 has 2 divisors, whose sum is σ = 1881944034. Its totient is φ = 1881944032.

The previous prime is 1881944023. The next prime is 1881944101. The reversal of 1881944033 is 3304491881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1724491729 + 157452304 = 41527^2 + 12548^2 .

It is a cyclic number.

It is not a de Polignac number, because 1881944033 - 2⁴ = 1881944017 is a prime.

It is not a weakly prime, because it can be changed into another prime (1881944023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940972016 + 940972017.

It is an arithmetic number, because the mean of its divisors is an integer number (940972017).

Almost surely, 2^1881944033 is an apocalyptic number.

It is an amenable number.

1881944033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1881944033 is an equidigital number, since it uses as much as digits as its factorization.

1881944033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 1881944033 is about 43381.3788738901. The cubic root of 1881944033 is about 1234.6264247325.

The spelling of 1881944033 in words is "one billion, eight hundred eighty-one million, nine hundred forty-four thousand, thirty-three".