168769445 has 16 divisors (see below), whose sum is σ = 218718192. Its totient is φ = 124277760.

The previous prime is 168769439. The next prime is 168769451. The reversal of 168769445 is 544967861.

It is an interprime number because it is at equal distance from previous prime (168769439) and next prime (168769451).

It can be written as a sum of positive squares in 8 ways, for example, as 1481089 + 167288356 = 1217^2 + 12934^2 .

It is not a de Polignac number, because 168769445 - 2⁸ = 168769189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168769393 and 168769402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20765 + ... + 27725.

It is an arithmetic number, because the mean of its divisors is an integer number (13669887).

Almost surely, 2^168769445 is an apocalyptic number.

It is an amenable number.

168769445 is a deficient number, since it is larger than the sum of its proper divisors (49948747).

168769445 is a wasteful number, since it uses less digits than its factorization.

168769445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7352.

The product of its digits is 1451520, while the sum is 50.

The square root of 168769445 is about 12991.1294736062. The cubic root of 168769445 is about 552.6259494601.

The spelling of 168769445 in words is "one hundred sixty-eight million, seven hundred sixty-nine thousand, four hundred forty-five".