1318542811 has 2 divisors, whose sum is σ = 1318542812. Its totient is φ = 1318542810.

The previous prime is 1318542793. The next prime is 1318542833. The reversal of 1318542811 is 1182458131.

It is a weak prime.

It is an emirp because it is prime and its reverse (1182458131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1318542811 - 2⁷ = 1318542683 is a prime.

It is not a weakly prime, because it can be changed into another prime (1318542881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659271405 + 659271406.

It is an arithmetic number, because the mean of its divisors is an integer number (659271406).

Almost surely, 2^1318542811 is an apocalyptic number.

1318542811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318542811 is an equidigital number, since it uses as much as digits as its factorization.

1318542811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 34.

The square root of 1318542811 is about 36311.7448079819. The cubic root of 1318542811 is about 1096.5575053047.

The spelling of 1318542811 in words is "one billion, three hundred eighteen million, five hundred forty-two thousand, eight hundred eleven".