167471987 has 2 divisors, whose sum is σ = 167471988. Its totient is φ = 167471986.

The previous prime is 167471959. The next prime is 167471999. The reversal of 167471987 is 789174761.

It is a strong prime.

It is an emirp because it is prime and its reverse (789174761) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-167471987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (167471917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83735993 + 83735994.

It is an arithmetic number, because the mean of its divisors is an integer number (83735994).

Almost surely, 2^167471987 is an apocalyptic number.

167471987 is a deficient number, since it is larger than the sum of its proper divisors (1).

167471987 is an equidigital number, since it uses as much as digits as its factorization.

167471987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 50.

The square root of 167471987 is about 12941.0968236854. The cubic root of 167471987 is about 551.2061540636.

The spelling of 167471987 in words is "one hundred sixty-seven million, four hundred seventy-one thousand, nine hundred eighty-seven".