72109163 has 8 divisors (see below), whose sum is σ = 85993728. Its totient is φ = 59120424.

The previous prime is 72109157. The next prime is 72109187. The reversal of 72109163 is 36190127.

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

It is a cyclic number.

It is not a de Polignac number, because 72109163 - 2¹⁸ = 71847019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72109363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223781 + ... + 224102.

It is an arithmetic number, because the mean of its divisors is an integer number (10749216).

Almost surely, 2^72109163 is an apocalyptic number.

72109163 is a deficient number, since it is larger than the sum of its proper divisors (13884565).

72109163 is a wasteful number, since it uses less digits than its factorization.

72109163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447913.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 72109163 is about 8491.7114293881. The cubic root of 72109163 is about 416.2269067680.

The spelling of 72109163 in words is "seventy-two million, one hundred nine thousand, one hundred sixty-three".