618404093 has 2 divisors, whose sum is σ = 618404094. Its totient is φ = 618404092.

The previous prime is 618404081. The next prime is 618404117. The reversal of 618404093 is 390404816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 599368324 + 19035769 = 24482^2 + 4363^2 .

It is a cyclic number.

It is not a de Polignac number, because 618404093 - 2⁶ = 618404029 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618404063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309202046 + 309202047.

It is an arithmetic number, because the mean of its divisors is an integer number (309202047).

Almost surely, 2^618404093 is an apocalyptic number.

It is an amenable number.

618404093 is a deficient number, since it is larger than the sum of its proper divisors (1).

618404093 is an equidigital number, since it uses as much as digits as its factorization.

618404093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 618404093 is about 24867.7319633295. The cubic root of 618404093 is about 851.9696390725.

The spelling of 618404093 in words is "six hundred eighteen million, four hundred four thousand, ninety-three".