6618021241 has 12 divisors (see below), whose sum is σ = 7413377580. Its totient is φ = 5898285120.

The previous prime is 6618021217. The next prime is 6618021281. The reversal of 6618021241 is 1421208166.

It can be written as a sum of positive squares in 6 ways, for example, as 318265600 + 6299755641 = 17840^2 + 79371^2 .

It is not a de Polignac number, because 6618021241 - 2²³ = 6609632633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6618021281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 670270 + ... + 680071.

It is an arithmetic number, because the mean of its divisors is an integer number (617781465).

Almost surely, 2^6618021241 is an apocalyptic number.

It is an amenable number.

6618021241 is a deficient number, since it is larger than the sum of its proper divisors (795356339).

6618021241 is a wasteful number, since it uses less digits than its factorization.

6618021241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350396 (or 1350383 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 6618021241 is about 81351.2215089608. The cubic root of 6618021241 is about 1877.4831683541.

The spelling of 6618021241 in words is "six billion, six hundred eighteen million, twenty-one thousand, two hundred forty-one".