2143422418 has 4 divisors (see below), whose sum is σ = 3215133630. Its totient is φ = 1071711208.

The previous prime is 2143422409. The next prime is 2143422427. The reversal of 2143422418 is 8142243412.

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

It is an interprime number because it is at equal distance from previous prime (2143422409) and next prime (2143422427).

It can be written as a sum of positive squares in only one way, i.e., 1812800929 + 330621489 = 42577^2 + 18183^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2143422418.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535855603 + ... + 535855606.

Almost surely, 2^2143422418 is an apocalyptic number.

2143422418 is a deficient number, since it is larger than the sum of its proper divisors (1071711212).

2143422418 is a wasteful number, since it uses less digits than its factorization.

2143422418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071711211.

The product of its digits is 12288, while the sum is 31.

The square root of 2143422418 is about 46297.1102553928. The cubic root of 2143422418 is about 1289.3453437686.

The spelling of 2143422418 in words is "two billion, one hundred forty-three million, four hundred twenty-two thousand, four hundred eighteen".