845168693 has 2 divisors, whose sum is σ = 845168694. Its totient is φ = 845168692.

The previous prime is 845168683. The next prime is 845168747. The reversal of 845168693 is 396861548.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 803268964 + 41899729 = 28342^2 + 6473^2 .

It is a cyclic number.

It is not a de Polignac number, because 845168693 - 2²² = 840974389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (845168633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422584346 + 422584347.

It is an arithmetic number, because the mean of its divisors is an integer number (422584347).

Almost surely, 2^845168693 is an apocalyptic number.

It is an amenable number.

845168693 is a deficient number, since it is larger than the sum of its proper divisors (1).

845168693 is an equidigital number, since it uses as much as digits as its factorization.

845168693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 50.

The square root of 845168693 is about 29071.7851705051. The cubic root of 845168693 is about 945.4701030654.

The spelling of 845168693 in words is "eight hundred forty-five million, one hundred sixty-eight thousand, six hundred ninety-three".