618244945919 has 2 divisors, whose sum is σ = 618244945920. Its totient is φ = 618244945918.

The previous prime is 618244945909. The next prime is 618244945933. The reversal of 618244945919 is 919549442816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 618244945919 - 2⁸ = 618244945663 is a prime.

It is a super-2 number, since 2×618244945919² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618244945909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309122472959 + 309122472960.

It is an arithmetic number, because the mean of its divisors is an integer number (309122472960).

Almost surely, 2^618244945919 is an apocalyptic number.

618244945919 is a deficient number, since it is larger than the sum of its proper divisors (1).

618244945919 is an equidigital number, since it uses as much as digits as its factorization.

618244945919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22394880, while the sum is 62.

The spelling of 618244945919 in words is "six hundred eighteen billion, two hundred forty-four million, nine hundred forty-five thousand, nine hundred nineteen".