168493879 has 2 divisors, whose sum is σ = 168493880. Its totient is φ = 168493878.

The previous prime is 168493873. The next prime is 168493921. The reversal of 168493879 is 978394861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168493879 - 2¹¹ = 168491831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168493873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84246939 + 84246940.

It is an arithmetic number, because the mean of its divisors is an integer number (84246940).

Almost surely, 2^168493879 is an apocalyptic number.

168493879 is a deficient number, since it is larger than the sum of its proper divisors (1).

168493879 is an equidigital number, since it uses as much as digits as its factorization.

168493879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 55.

The square root of 168493879 is about 12980.5192114954. The cubic root of 168493879 is about 552.3250105450.

The spelling of 168493879 in words is "one hundred sixty-eight million, four hundred ninety-three thousand, eight hundred seventy-nine".