1318818811 has 4 divisors (see below), whose sum is σ = 1335512800. Its totient is φ = 1302124824.

The previous prime is 1318818793. The next prime is 1318818859. The reversal of 1318818811 is 1188188131.

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

It is a cyclic number.

It is not a de Polignac number, because 1318818811 - 2⁵ = 1318818779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1318818881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8346876 + ... + 8347033.

It is an arithmetic number, because the mean of its divisors is an integer number (333878200).

Almost surely, 2^1318818811 is an apocalyptic number.

1318818811 is a deficient number, since it is larger than the sum of its proper divisors (16693989).

1318818811 is an equidigital number, since it uses as much as digits as its factorization.

1318818811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16693988.

The product of its digits is 12288, while the sum is 40.

The square root of 1318818811 is about 36315.5450323963. The cubic root of 1318818811 is about 1096.6340111651.

The spelling of 1318818811 in words is "one billion, three hundred eighteen million, eight hundred eighteen thousand, eight hundred eleven".