13143564394 has 8 divisors (see below), whose sum is σ = 19718092548. Its totient is φ = 6570866880.

The previous prime is 13143564347. The next prime is 13143564437. The reversal of 13143564394 is 49346534131.

It is a happy number.

13143564394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12136327225 + 1007237169 = 110165^2 + 31737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13143564394.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439567 + ... + 468514.

Almost surely, 2^13143564394 is an apocalyptic number.

13143564394 is a deficient number, since it is larger than the sum of its proper divisors (6574528154).

13143564394 is an equidigital number, since it uses as much as digits as its factorization.

13143564394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915320.

The product of its digits is 466560, while the sum is 43.

The spelling of 13143564394 in words is "thirteen billion, one hundred forty-three million, five hundred sixty-four thousand, three hundred ninety-four".