1418749278641 has 2 divisors, whose sum is σ = 1418749278642. Its totient is φ = 1418749278640.

The previous prime is 1418749278599. The next prime is 1418749278763. The reversal of 1418749278641 is 1468729478141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1037350398016 + 381398880625 = 1018504^2 + 617575^2 .

It is a cyclic number.

It is not a de Polignac number, because 1418749278641 - 2³⁰ = 1417675536817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1418749278341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 709374639320 + 709374639321.

It is an arithmetic number, because the mean of its divisors is an integer number (709374639321).

Almost surely, 2^{1418749278641} is an apocalyptic number.

It is an amenable number.

1418749278641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1418749278641 is an equidigital number, since it uses as much as digits as its factorization.

1418749278641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21676032, while the sum is 62.

The spelling of 1418749278641 in words is "one trillion, four hundred eighteen billion, seven hundred forty-nine million, two hundred seventy-eight thousand, six hundred forty-one".