19143587941 has 2 divisors, whose sum is σ = 19143587942. Its totient is φ = 19143587940.

The previous prime is 19143587891. The next prime is 19143588017. The reversal of 19143587941 is 14978534191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14323063041 + 4820524900 = 119679^2 + 69430^2 .

It is a cyclic number.

It is not a de Polignac number, because 19143587941 - 2¹¹ = 19143585893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19143557941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9571793970 + 9571793971.

It is an arithmetic number, because the mean of its divisors is an integer number (9571793971).

Almost surely, 2^19143587941 is an apocalyptic number.

It is an amenable number.

19143587941 is a deficient number, since it is larger than the sum of its proper divisors (1).

19143587941 is an equidigital number, since it uses as much as digits as its factorization.

19143587941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 52.

The spelling of 19143587941 in words is "nineteen billion, one hundred forty-three million, five hundred eighty-seven thousand, nine hundred forty-one".