618273441 has 24 divisors (see below), whose sum is σ = 926702504. Its totient is φ = 396887040.

The previous prime is 618273437. The next prime is 618273451. The reversal of 618273441 is 144372816.

618273441 is a `hidden beast` number, since 618 + 2 + 7 + 34 + 4 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 207360000 + 410913441 = 14400^2 + 20271^2 .

It is not a de Polignac number, because 618273441 - 2² = 618273437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 618273396 and 618273405.

It is not an unprimeable number, because it can be changed into a prime (618273401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22731 + ... + 41871.

Almost surely, 2^618273441 is an apocalyptic number.

It is an amenable number.

618273441 is a deficient number, since it is larger than the sum of its proper divisors (308429063).

618273441 is a wasteful number, since it uses less digits than its factorization.

618273441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19281 (or 19278 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 618273441 is about 24865.1048861653. The cubic root of 618273441 is about 851.9096354932.

The spelling of 618273441 in words is "six hundred eighteen million, two hundred seventy-three thousand, four hundred forty-one".