18143342228 has 24 divisors (see below), whose sum is σ = 34646483424. Its totient is φ = 8244784800.

The previous prime is 18143342221. The next prime is 18143342233. The reversal of 18143342228 is 82224334181.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18143342191 and 18143342200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18143342221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119138 + ... + 224678.

It is an arithmetic number, because the mean of its divisors is an integer number (1443603476).

Almost surely, 2^18143342228 is an apocalyptic number.

It is an amenable number.

18143342228 is a deficient number, since it is larger than the sum of its proper divisors (16503141196).

18143342228 is a wasteful number, since it uses less digits than its factorization.

18143342228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109463 (or 109461 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The spelling of 18143342228 in words is "eighteen billion, one hundred forty-three million, three hundred forty-two thousand, two hundred twenty-eight".