618724273 has 2 divisors, whose sum is σ = 618724274. Its totient is φ = 618724272.

The previous prime is 618724259. The next prime is 618724387. The reversal of 618724273 is 372427816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 544195584 + 74528689 = 23328^2 + 8633^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-618724273 is a prime.

It is not a weakly prime, because it can be changed into another prime (618724213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309362136 + 309362137.

It is an arithmetic number, because the mean of its divisors is an integer number (309362137).

Almost surely, 2^618724273 is an apocalyptic number.

It is an amenable number.

618724273 is a deficient number, since it is larger than the sum of its proper divisors (1).

618724273 is an equidigital number, since it uses as much as digits as its factorization.

618724273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 40.

The square root of 618724273 is about 24874.1687901325. The cubic root of 618724273 is about 852.1166500521.

The spelling of 618724273 in words is "six hundred eighteen million, seven hundred twenty-four thousand, two hundred seventy-three".