1318542847 has 2 divisors, whose sum is σ = 1318542848. Its totient is φ = 1318542846.

The previous prime is 1318542839. The next prime is 1318542853. The reversal of 1318542847 is 7482458131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1318542847 - 2³ = 1318542839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1318542857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659271423 + 659271424.

It is an arithmetic number, because the mean of its divisors is an integer number (659271424).

Almost surely, 2^1318542847 is an apocalyptic number.

1318542847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318542847 is an equidigital number, since it uses as much as digits as its factorization.

1318542847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 43.

The square root of 1318542847 is about 36311.7453036893. The cubic root of 1318542847 is about 1096.5575152844.

The spelling of 1318542847 in words is "one billion, three hundred eighteen million, five hundred forty-two thousand, eight hundred forty-seven".