168140471 has 2 divisors, whose sum is σ = 168140472. Its totient is φ = 168140470.

The previous prime is 168140437. The next prime is 168140509. The reversal of 168140471 is 174041861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168140471 - 2⁶ = 168140407 is a prime.

It is a super-3 number, since 3×168140471³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168140411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84070235 + 84070236.

It is an arithmetic number, because the mean of its divisors is an integer number (84070236).

Almost surely, 2^168140471 is an apocalyptic number.

168140471 is a deficient number, since it is larger than the sum of its proper divisors (1).

168140471 is an equidigital number, since it uses as much as digits as its factorization.

168140471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 168140471 is about 12966.8990510453. The cubic root of 168140471 is about 551.9385816546.

The spelling of 168140471 in words is "one hundred sixty-eight million, one hundred forty thousand, four hundred seventy-one".