12643159 has 8 divisors (see below), whose sum is σ = 13433760. Its totient is φ = 11876256.

The previous prime is 12643117. The next prime is 12643177. The reversal of 12643159 is 95134621.

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

It is a cyclic number.

It is not a de Polignac number, because 12643159 - 2¹³ = 12634967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12643159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4819 + ... + 6964.

It is an arithmetic number, because the mean of its divisors is an integer number (1679220).

Almost surely, 2^12643159 is an apocalyptic number.

12643159 is a deficient number, since it is larger than the sum of its proper divisors (790601).

12643159 is a wasteful number, since it uses less digits than its factorization.

12643159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11849.

The product of its digits is 6480, while the sum is 31.

The square root of 12643159 is about 3555.7220082566. The cubic root of 12643159 is about 232.9620610310.

It can be divided in two parts, 1264315 and 9, that multiplied together give a triangular number (11378835 = T₄₇₇₀).

The spelling of 12643159 in words is "twelve million, six hundred forty-three thousand, one hundred fifty-nine".