229143918 has 16 divisors (see below), whose sum is σ = 485246160. Its totient is φ = 71888256.

The previous prime is 229143911. The next prime is 229143919. The reversal of 229143918 is 819341922.

229143918 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229143911) 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, 1123153 + ... + 1123356.

It is an arithmetic number, because the mean of its divisors is an integer number (30327885).

Almost surely, 2^229143918 is an apocalyptic number.

229143918 is an abundant number, since it is smaller than the sum of its proper divisors (256102242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

229143918 is a wasteful number, since it uses less digits than its factorization.

229143918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246531.

The product of its digits is 31104, while the sum is 39.

The square root of 229143918 is about 15137.5003881090. The cubic root of 229143918 is about 611.9314556494.

The spelling of 229143918 in words is "two hundred twenty-nine million, one hundred forty-three thousand, nine hundred eighteen".