1315869143 has 2 divisors, whose sum is σ = 1315869144. Its totient is φ = 1315869142.

The previous prime is 1315869127. The next prime is 1315869157. The reversal of 1315869143 is 3419685131.

It is a strong prime.

It is an emirp because it is prime and its reverse (3419685131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1315869143 - 2⁴ = 1315869127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1315869143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315869103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657934571 + 657934572.

It is an arithmetic number, because the mean of its divisors is an integer number (657934572).

Almost surely, 2^1315869143 is an apocalyptic number.

1315869143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315869143 is an equidigital number, since it uses as much as digits as its factorization.

1315869143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 41.

The square root of 1315869143 is about 36274.9106546109. The cubic root of 1315869143 is about 1095.8158242634.

The spelling of 1315869143 in words is "one billion, three hundred fifteen million, eight hundred sixty-nine thousand, one hundred forty-three".