229129161 has 4 divisors (see below), whose sum is σ = 305505552. Its totient is φ = 152752772.

The previous prime is 229129157. The next prime is 229129163. The reversal of 229129161 is 161921922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 229129161 - 2² = 229129157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (229129163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38188191 + ... + 38188196.

It is an arithmetic number, because the mean of its divisors is an integer number (76376388).

Almost surely, 2^229129161 is an apocalyptic number.

It is an amenable number.

229129161 is a deficient number, since it is larger than the sum of its proper divisors (76376391).

229129161 is an equidigital number, since it uses as much as digits as its factorization.

229129161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76376390.

The product of its digits is 3888, while the sum is 33.

The square root of 229129161 is about 15137.0129483990. The cubic root of 229129161 is about 611.9183191215.

The spelling of 229129161 in words is "two hundred twenty-nine million, one hundred twenty-nine thousand, one hundred sixty-one".