1218697848941 has 2 divisors, whose sum is σ = 1218697848942. Its totient is φ = 1218697848940.

The previous prime is 1218697848923. The next prime is 1218697848959. The reversal of 1218697848941 is 1498487968121.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1218697848923) and next prime (1218697848959).

It can be written as a sum of positive squares in only one way, i.e., 1186256435716 + 32441413225 = 1089154^2 + 180115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1218697848941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1218637848941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609348924470 + 609348924471.

It is an arithmetic number, because the mean of its divisors is an integer number (609348924471).

Almost surely, 2^{1218697848941} is an apocalyptic number.

It is an amenable number.

1218697848941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1218697848941 is an equidigital number, since it uses as much as digits as its factorization.

1218697848941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55738368, while the sum is 68.

The spelling of 1218697848941 in words is "one trillion, two hundred eighteen billion, six hundred ninety-seven million, eight hundred forty-eight thousand, nine hundred forty-one".