1218334879 has 2 divisors, whose sum is σ = 1218334880. Its totient is φ = 1218334878.

The previous prime is 1218334823. The next prime is 1218334913. The reversal of 1218334879 is 9784338121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1218334879 - 2¹³ = 1218326687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1218334079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609167439 + 609167440.

It is an arithmetic number, because the mean of its divisors is an integer number (609167440).

Almost surely, 2^1218334879 is an apocalyptic number.

1218334879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1218334879 is an equidigital number, since it uses as much as digits as its factorization.

1218334879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 46.

The square root of 1218334879 is about 34904.6541166074. The cubic root of 1218334879 is about 1068.0433800477.

The spelling of 1218334879 in words is "one billion, two hundred eighteen million, three hundred thirty-four thousand, eight hundred seventy-nine".