1923687589841 has 2 divisors, whose sum is σ = 1923687589842. Its totient is φ = 1923687589840.

The previous prime is 1923687589819. The next prime is 1923687589843. The reversal of 1923687589841 is 1489857863291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1835810916241 + 87876673600 = 1354921^2 + 296440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1923687589841 - 2¹⁰ = 1923687588817 is a prime.

Together with 1923687589843, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1923687589843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961843794920 + 961843794921.

It is an arithmetic number, because the mean of its divisors is an integer number (961843794921).

Almost surely, 2^{1923687589841} is an apocalyptic number.

It is an amenable number.

1923687589841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1923687589841 is an equidigital number, since it uses as much as digits as its factorization.

1923687589841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209018880, while the sum is 71.

The spelling of 1923687589841 in words is "one trillion, nine hundred twenty-three billion, six hundred eighty-seven million, five hundred eighty-nine thousand, eight hundred forty-one".