229331918 has 8 divisors (see below), whose sum is σ = 347042448. Its totient is φ = 113651104.

The previous prime is 229331911. The next prime is 229331951. The reversal of 229331918 is 819133922.

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

It is a super-2 number, since 2×229331918² = 105186257227117448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229331911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507146 + ... + 507597.

It is an arithmetic number, because the mean of its divisors is an integer number (43380306).

Almost surely, 2^229331918 is an apocalyptic number.

229331918 is a deficient number, since it is larger than the sum of its proper divisors (117710530).

229331918 is a wasteful number, since it uses less digits than its factorization.

229331918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014858.

The product of its digits is 23328, while the sum is 38.

The square root of 229331918 is about 15143.7088587968. The cubic root of 229331918 is about 612.0987619531.

The spelling of 229331918 in words is "two hundred twenty-nine million, three hundred thirty-one thousand, nine hundred eighteen".