229556018 has 4 divisors (see below), whose sum is σ = 344334030. Its totient is φ = 114778008.

The previous prime is 229555999. The next prime is 229556021. The reversal of 229556018 is 810655922.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 214710409 + 14845609 = 14653^2 + 3853^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57389003 + ... + 57389006.

Almost surely, 2^229556018 is an apocalyptic number.

229556018 is a deficient number, since it is larger than the sum of its proper divisors (114778012).

229556018 is a wasteful number, since it uses less digits than its factorization.

229556018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114778011.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 229556018 is about 15151.1061642376. The cubic root of 229556018 is about 612.2980752124.

The spelling of 229556018 in words is "two hundred twenty-nine million, five hundred fifty-six thousand, eighteen".