618475790417 has 2 divisors, whose sum is σ = 618475790418. Its totient is φ = 618475790416.

The previous prime is 618475790393. The next prime is 618475790423. The reversal of 618475790417 is 714097574816.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 618439115281 + 36675136 = 786409^2 + 6056^2 .

It is a cyclic number.

It is not a de Polignac number, because 618475790417 - 2¹² = 618475786321 is a prime.

It is a super-3 number, since 3×618475790417³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (618475793417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309237895208 + 309237895209.

It is an arithmetic number, because the mean of its divisors is an integer number (309237895209).

Almost surely, 2^618475790417 is an apocalyptic number.

It is an amenable number.

618475790417 is a deficient number, since it is larger than the sum of its proper divisors (1).

618475790417 is an equidigital number, since it uses as much as digits as its factorization.

618475790417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11854080, while the sum is 59.

The spelling of 618475790417 in words is "six hundred eighteen billion, four hundred seventy-five million, seven hundred ninety thousand, four hundred seventeen".