618815471 has 2 divisors, whose sum is σ = 618815472. Its totient is φ = 618815470.

The previous prime is 618815467. The next prime is 618815497. The reversal of 618815471 is 174518816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 618815471 - 2² = 618815467 is a prime.

It is a super-3 number, since 3×618815471³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611815471) 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, 309407735 + 309407736.

It is an arithmetic number, because the mean of its divisors is an integer number (309407736).

Almost surely, 2^618815471 is an apocalyptic number.

618815471 is a deficient number, since it is larger than the sum of its proper divisors (1).

618815471 is an equidigital number, since it uses as much as digits as its factorization.

618815471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 41.

The square root of 618815471 is about 24876.0019094709. The cubic root of 618815471 is about 852.1585144279.

The spelling of 618815471 in words is "six hundred eighteen million, eight hundred fifteen thousand, four hundred seventy-one".