1142873818 has 36 divisors (see below), whose sum is σ = 1863538110. Its totient is φ = 525009408.

The previous prime is 1142873791. The next prime is 1142873833. The reversal of 1142873818 is 8183782411.

It can be written as a sum of positive squares in 3 ways, for example, as 722910769 + 419963049 = 26887^2 + 20493^2 .

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 in 17 ways as a sum of consecutive naturals, for example, 5921530 + ... + 5921722.

Almost surely, 2^1142873818 is an apocalyptic number.

1142873818 is a deficient number, since it is larger than the sum of its proper divisors (720664292).

1142873818 is an equidigital number, since it uses as much as digits as its factorization.

1142873818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463 (or 247 counting only the distinct ones).

The product of its digits is 86016, while the sum is 43.

The square root of 1142873818 is about 33806.4168169299. The cubic root of 1142873818 is about 1045.5210020785.

The spelling of 1142873818 in words is "one billion, one hundred forty-two million, eight hundred seventy-three thousand, eight hundred eighteen".