15981167 has 2 divisors, whose sum is σ = 15981168. Its totient is φ = 15981166.

The previous prime is 15981157. The next prime is 15981181. The reversal of 15981167 is 76118951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15981167 - 2¹⁶ = 15915631 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15981167.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15981127) by changing a digit.

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 as a sum of consecutive naturals, namely, 7990583 + 7990584.

It is an arithmetic number, because the mean of its divisors is an integer number (7990584).

Almost surely, 2^15981167 is an apocalyptic number.

15981167 is a deficient number, since it is larger than the sum of its proper divisors (1).

15981167 is an equidigital number, since it uses as much as digits as its factorization.

15981167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 38.

The square root of 15981167 is about 3997.6451818539. The cubic root of 15981167 is about 251.8853041080.

The spelling of 15981167 in words is "fifteen million, nine hundred eighty-one thousand, one hundred sixty-seven".