168893693 has 2 divisors, whose sum is σ = 168893694. Its totient is φ = 168893692.

The previous prime is 168893677. The next prime is 168893707. The reversal of 168893693 is 396398861.

168893693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165199609 + 3694084 = 12853^2 + 1922^2 .

It is a cyclic number.

It is not a de Polignac number, because 168893693 - 2⁴ = 168893677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168899693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84446846 + 84446847.

It is an arithmetic number, because the mean of its divisors is an integer number (84446847).

Almost surely, 2^168893693 is an apocalyptic number.

It is an amenable number.

168893693 is a deficient number, since it is larger than the sum of its proper divisors (1).

168893693 is an equidigital number, since it uses as much as digits as its factorization.

168893693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 53.

The square root of 168893693 is about 12995.9106260393. The cubic root of 168893693 is about 552.7615305306.

The spelling of 168893693 in words is "one hundred sixty-eight million, eight hundred ninety-three thousand, six hundred ninety-three".