229818505 has 16 divisors (see below), whose sum is σ = 319173120. Its totient is φ = 155593152.

The previous prime is 229818499. The next prime is 229818521. The reversal of 229818505 is 505818922.

It is a cyclic number.

It is not a de Polignac number, because 229818505 - 2³ = 229818497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38794 + ... + 44323.

It is an arithmetic number, because the mean of its divisors is an integer number (19948320).

Almost surely, 2^229818505 is an apocalyptic number.

It is an amenable number.

229818505 is a deficient number, since it is larger than the sum of its proper divisors (89354615).

229818505 is an equidigital number, since it uses as much as digits as its factorization.

229818505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83208.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 229818505 is about 15159.7659942362. The cubic root of 229818505 is about 612.5313647690.

The spelling of 229818505 in words is "two hundred twenty-nine million, eight hundred eighteen thousand, five hundred five".