168394151 has 2 divisors, whose sum is σ = 168394152. Its totient is φ = 168394150.

The previous prime is 168394123. The next prime is 168394153. The reversal of 168394151 is 151493861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168394151 - 2²⁶ = 101285287 is a prime.

Together with 168394153, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168394153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84197075 + 84197076.

It is an arithmetic number, because the mean of its divisors is an integer number (84197076).

Almost surely, 2^168394151 is an apocalyptic number.

168394151 is a deficient number, since it is larger than the sum of its proper divisors (1).

168394151 is an equidigital number, since it uses as much as digits as its factorization.

168394151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 168394151 is about 12976.6771941048. The cubic root of 168394151 is about 552.2160191682.

The spelling of 168394151 in words is "one hundred sixty-eight million, three hundred ninety-four thousand, one hundred fifty-one".