167871643 has 2 divisors, whose sum is σ = 167871644. Its totient is φ = 167871642.

The previous prime is 167871559. The next prime is 167871647. The reversal of 167871643 is 346178761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 167871643 - 2⁹ = 167871131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 167871643.

It is not a weakly prime, because it can be changed into another prime (167871647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83935821 + 83935822.

It is an arithmetic number, because the mean of its divisors is an integer number (83935822).

Almost surely, 2^167871643 is an apocalyptic number.

167871643 is a deficient number, since it is larger than the sum of its proper divisors (1).

167871643 is an equidigital number, since it uses as much as digits as its factorization.

167871643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 43.

The square root of 167871643 is about 12956.5289719122. The cubic root of 167871643 is about 551.6442727934.

The spelling of 167871643 in words is "one hundred sixty-seven million, eight hundred seventy-one thousand, six hundred forty-three".