168748445 has 8 divisors (see below), whose sum is σ = 202587480. Its totient is φ = 134939200.

The previous prime is 168748439. The next prime is 168748451. The reversal of 168748445 is 544847861.

It is an interprime number because it is at equal distance from previous prime (168748439) and next prime (168748451).

It can be written as a sum of positive squares in 4 ways, for example, as 81830116 + 86918329 = 9046^2 + 9323^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 168748445 - 2⁴ = 168748429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168748445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7895 + ... + 19995.

It is an arithmetic number, because the mean of its divisors is an integer number (25323435).

Almost surely, 2^168748445 is an apocalyptic number.

It is an amenable number.

168748445 is a deficient number, since it is larger than the sum of its proper divisors (33839035).

168748445 is a wasteful number, since it uses less digits than its factorization.

168748445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14895.

The product of its digits is 860160, while the sum is 47.

The square root of 168748445 is about 12990.3212046508. The cubic root of 168748445 is about 552.6030274074.

The spelling of 168748445 in words is "one hundred sixty-eight million, seven hundred forty-eight thousand, four hundred forty-five".