1228432430218 has 8 divisors (see below), whose sum is σ = 2105884166112. Its totient is φ = 526471041516.

The previous prime is 1228432430209. The next prime is 1228432430219. The reversal of 1228432430218 is 8120342348221.

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

It is a super-2 number, since 2×1228432430218² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1228432430219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43872586780 + ... + 43872586807.

It is an arithmetic number, because the mean of its divisors is an integer number (263235520764).

Almost surely, 2^{1228432430218} is an apocalyptic number.

1228432430218 is a deficient number, since it is larger than the sum of its proper divisors (877451735894).

1228432430218 is an equidigital number, since it uses as much as digits as its factorization.

1228432430218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87745173596.

The product of its (nonzero) digits is 147456, while the sum is 40.

Adding to 1228432430218 its reverse (8120342348221), we get a palindrome (9348774778439).

The spelling of 1228432430218 in words is "one trillion, two hundred twenty-eight billion, four hundred thirty-two million, four hundred thirty thousand, two hundred eighteen".