168924451 has 2 divisors, whose sum is σ = 168924452. Its totient is φ = 168924450.

The previous prime is 168924401. The next prime is 168924467. The reversal of 168924451 is 154429861.

It is a strong prime.

It is an emirp because it is prime and its reverse (154429861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168924451 - 2⁷ = 168924323 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (168924401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84462225 + 84462226.

It is an arithmetic number, because the mean of its divisors is an integer number (84462226).

Almost surely, 2^168924451 is an apocalyptic number.

168924451 is a deficient number, since it is larger than the sum of its proper divisors (1).

168924451 is an equidigital number, since it uses as much as digits as its factorization.

168924451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 40.

The square root of 168924451 is about 12997.0939444170. The cubic root of 168924451 is about 552.7950838008.

The spelling of 168924451 in words is "one hundred sixty-eight million, nine hundred twenty-four thousand, four hundred fifty-one".