618115873 has 2 divisors, whose sum is σ = 618115874. Its totient is φ = 618115872.

The previous prime is 618115811. The next prime is 618115891. The reversal of 618115873 is 378511816.

618115873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 567535329 + 50580544 = 23823^2 + 7112^2 .

It is a cyclic number.

It is not a de Polignac number, because 618115873 - 2²¹ = 616018721 is a prime.

It is not a weakly prime, because it can be changed into another prime (618115373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309057936 + 309057937.

It is an arithmetic number, because the mean of its divisors is an integer number (309057937).

Almost surely, 2^618115873 is an apocalyptic number.

It is an amenable number.

618115873 is a deficient number, since it is larger than the sum of its proper divisors (1).

618115873 is an equidigital number, since it uses as much as digits as its factorization.

618115873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 40.

The square root of 618115873 is about 24861.9362278967. The cubic root of 618115873 is about 851.8372591554.

The spelling of 618115873 in words is "six hundred eighteen million, one hundred fifteen thousand, eight hundred seventy-three".