1318801143 has 24 divisors (see below), whose sum is σ = 1935209584. Its totient is φ = 798272640.

The previous prime is 1318801111. The next prime is 1318801177. The reversal of 1318801143 is 3411088131.

It is not a de Polignac number, because 1318801143 - 2⁵ = 1318801111 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1318801143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318801103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 373221 + ... + 376737.

Almost surely, 2^1318801143 is an apocalyptic number.

1318801143 is a deficient number, since it is larger than the sum of its proper divisors (616408441).

1318801143 is a wasteful number, since it uses less digits than its factorization.

1318801143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4575 (or 4564 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1318801143 is about 36315.3017748717. The cubic root of 1318801143 is about 1096.6291140011.

Adding to 1318801143 its reverse (3411088131), we get a palindrome (4729889274).

The spelling of 1318801143 in words is "one billion, three hundred eighteen million, eight hundred one thousand, one hundred forty-three".