1318022873 has 4 divisors (see below), whose sum is σ = 1318099200. Its totient is φ = 1317946548.

The previous prime is 1318022857. The next prime is 1318022911. The reversal of 1318022873 is 3782208131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1318022873 - 2⁴ = 1318022857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1318022803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1436 + ... + 51362.

It is an arithmetic number, because the mean of its divisors is an integer number (329524800).

Almost surely, 2^1318022873 is an apocalyptic number.

It is an amenable number.

1318022873 is a deficient number, since it is larger than the sum of its proper divisors (76327).

1318022873 is an equidigital number, since it uses as much as digits as its factorization.

1318022873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76326.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 1318022873 is about 36304.5847380190. The cubic root of 1318022873 is about 1096.4133520094.

The spelling of 1318022873 in words is "one billion, three hundred eighteen million, twenty-two thousand, eight hundred seventy-three".