229372161 has 8 divisors (see below), whose sum is σ = 321925920. Its totient is φ = 144866592.

The previous prime is 229372153. The next prime is 229372183. The reversal of 229372161 is 161273922.

229372161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 229372161 - 2³ = 229372153 is a prime.

It is a super-2 number, since 2×229372161² = 105223176483619842, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (229372061) 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, 2011980 + ... + 2012093.

It is an arithmetic number, because the mean of its divisors is an integer number (40240740).

Almost surely, 2^229372161 is an apocalyptic number.

It is an amenable number.

229372161 is a deficient number, since it is larger than the sum of its proper divisors (92553759).

229372161 is a wasteful number, since it uses less digits than its factorization.

229372161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024095.

The product of its digits is 9072, while the sum is 33.

The square root of 229372161 is about 15145.0375040803. The cubic root of 229372161 is about 612.1345634091.

The spelling of 229372161 in words is "two hundred twenty-nine million, three hundred seventy-two thousand, one hundred sixty-one".