618816692141 has 2 divisors, whose sum is σ = 618816692142. Its totient is φ = 618816692140.

The previous prime is 618816692129. The next prime is 618816692201. The reversal of 618816692141 is 141296618816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 476864826916 + 141951865225 = 690554^2 + 376765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-618816692141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618816692111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309408346070 + 309408346071.

It is an arithmetic number, because the mean of its divisors is an integer number (309408346071).

Almost surely, 2^618816692141 is an apocalyptic number.

It is an amenable number.

618816692141 is a deficient number, since it is larger than the sum of its proper divisors (1).

618816692141 is an equidigital number, since it uses as much as digits as its factorization.

618816692141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 53.

The spelling of 618816692141 in words is "six hundred eighteen billion, eight hundred sixteen million, six hundred ninety-two thousand, one hundred forty-one".