168413851 has 2 divisors, whose sum is σ = 168413852. Its totient is φ = 168413850.

The previous prime is 168413809. The next prime is 168413857. The reversal of 168413851 is 158314861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168413851 - 2²¹ = 166316699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168413851.

It is not a weakly prime, because it can be changed into another prime (168413857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84206925 + 84206926.

It is an arithmetic number, because the mean of its divisors is an integer number (84206926).

Almost surely, 2^168413851 is an apocalyptic number.

168413851 is a deficient number, since it is larger than the sum of its proper divisors (1).

168413851 is an equidigital number, since it uses as much as digits as its factorization.

168413851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 37.

The square root of 168413851 is about 12977.4362260040. The cubic root of 168413851 is about 552.2375524406.

The spelling of 168413851 in words is "one hundred sixty-eight million, four hundred thirteen thousand, eight hundred fifty-one".