229679818 has 4 divisors (see below), whose sum is σ = 344519730. Its totient is φ = 114839908.

The previous prime is 229679789. The next prime is 229679833. The reversal of 229679818 is 818976922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 818976922 = 2 ⋅409488461.

It can be written as a sum of positive squares in only one way, i.e., 225810729 + 3869089 = 15027^2 + 1967^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57419953 + ... + 57419956.

Almost surely, 2^229679818 is an apocalyptic number.

229679818 is a deficient number, since it is larger than the sum of its proper divisors (114839912).

229679818 is a wasteful number, since it uses less digits than its factorization.

229679818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114839911.

The product of its digits is 870912, while the sum is 52.

The square root of 229679818 is about 15155.1911238361. The cubic root of 229679818 is about 612.4081266059.

The spelling of 229679818 in words is "two hundred twenty-nine million, six hundred seventy-nine thousand, eight hundred eighteen".