618741811 has 2 divisors, whose sum is σ = 618741812. Its totient is φ = 618741810.

The previous prime is 618741763. The next prime is 618741817. The reversal of 618741811 is 118147816.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-618741811 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (618741817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309370905 + 309370906.

It is an arithmetic number, because the mean of its divisors is an integer number (309370906).

Almost surely, 2^618741811 is an apocalyptic number.

618741811 is a deficient number, since it is larger than the sum of its proper divisors (1).

618741811 is an equidigital number, since it uses as much as digits as its factorization.

618741811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 37.

The square root of 618741811 is about 24874.5213220275. The cubic root of 618741811 is about 852.1247011778.

The spelling of 618741811 in words is "six hundred eighteen million, seven hundred forty-one thousand, eight hundred eleven".