163718045 has 4 divisors (see below), whose sum is σ = 196461660. Its totient is φ = 130974432.

The previous prime is 163718033. The next prime is 163718053. The reversal of 163718045 is 540817361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68343289 + 95374756 = 8267^2 + 9766^2 .

It is a cyclic number.

It is not a de Polignac number, because 163718045 - 2⁴ = 163718029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163717996 and 163718014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16371800 + ... + 16371809.

It is an arithmetic number, because the mean of its divisors is an integer number (49115415).

Almost surely, 2^163718045 is an apocalyptic number.

It is an amenable number.

163718045 is a deficient number, since it is larger than the sum of its proper divisors (32743615).

163718045 is an equidigital number, since it uses as much as digits as its factorization.

163718045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32743614.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 163718045 is about 12795.2352459812. The cubic root of 163718045 is about 547.0565009310.

The spelling of 163718045 in words is "one hundred sixty-three million, seven hundred eighteen thousand, forty-five".