1884332830921 has 2 divisors, whose sum is σ = 1884332830922. Its totient is φ = 1884332830920.

The previous prime is 1884332830841. The next prime is 1884332831041. The reversal of 1884332830921 is 1290382334881.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1701863748025 + 182469082896 = 1304555^2 + 427164^2 .

It is an emirp because it is prime and its reverse (1290382334881) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1884332830921 is a prime.

It is not a weakly prime, because it can be changed into another prime (1884332833921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 942166415460 + 942166415461.

It is an arithmetic number, because the mean of its divisors is an integer number (942166415461).

Almost surely, 2^{1884332830921} is an apocalyptic number.

It is an amenable number.

1884332830921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1884332830921 is an equidigital number, since it uses as much as digits as its factorization.

1884332830921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 1884332830921 in words is "one trillion, eight hundred eighty-four billion, three hundred thirty-two million, eight hundred thirty thousand, nine hundred twenty-one".