618068849 has 2 divisors, whose sum is σ = 618068850. Its totient is φ = 618068848.

The previous prime is 618068839. The next prime is 618068863. The reversal of 618068849 is 948860816.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382906624 + 235162225 = 19568^2 + 15335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-618068849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 618068797 and 618068806.

It is not a weakly prime, because it can be changed into another prime (618068839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309034424 + 309034425.

It is an arithmetic number, because the mean of its divisors is an integer number (309034425).

Almost surely, 2^618068849 is an apocalyptic number.

It is an amenable number.

618068849 is a deficient number, since it is larger than the sum of its proper divisors (1).

618068849 is an equidigital number, since it uses as much as digits as its factorization.

618068849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 618068849 is about 24860.9905072183. The cubic root of 618068849 is about 851.8156570508.

The spelling of 618068849 in words is "six hundred eighteen million, sixty-eight thousand, eight hundred forty-nine".