168442965 has 24 divisors (see below), whose sum is σ = 299092248. Its totient is φ = 87644160.

The previous prime is 168442943. The next prime is 168442979. The reversal of 168442965 is 569244861.

168442965 is a `hidden beast` number, since 168 + 4 + 429 + 65 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 248004 + 168194961 = 498^2 + 12969^2 .

It is not a de Polignac number, because 168442965 - 2⁹ = 168442453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 168442965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43804 + ... + 47493.

It is an arithmetic number, because the mean of its divisors is an integer number (12462177).

Almost surely, 2^168442965 is an apocalyptic number.

168442965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168442965 is a deficient number, since it is larger than the sum of its proper divisors (130649283).

168442965 is a wasteful number, since it uses less digits than its factorization.

168442965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91349 (or 91346 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 168442965 is about 12978.5578936953. The cubic root of 168442965 is about 552.2693727009.

The spelling of 168442965 in words is "one hundred sixty-eight million, four hundred forty-two thousand, nine hundred sixty-five".