4511618139249 has 81 divisors (see below), whose sum is σ = 7137221691873. Its totient is φ = 2745029312064.

The previous prime is 4511618139247. The next prime is 4511618139299. The reversal of 4511618139249 is 9429318161154.

The square root of 4511618139249 is 2124057.

It is a perfect power (a square), and thus also a powerful number.

4511618139249 is a `hidden beast` number, since 4 + 5 + 1 + 1 + 618 + 13 + 9 + 2 + 4 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12264455025 + 4499353684224 = 110745^2 + 2121168^2 .

It is not a de Polignac number, because 4511618139249 - 2¹ = 4511618139247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4511618139195 and 4511618139204.

It is not an unprimeable number, because it can be changed into a prime (4511618139247) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 8863689607 + ... + 8863690115.

Almost surely, 2^{4511618139249} is an apocalyptic number.

4511618139249 is the 2124057-th square number.

4511618139249 is the 1062029-th centered octagonal number.

It is an amenable number.

4511618139249 is a deficient number, since it is larger than the sum of its proper divisors (2625603552624).

4511618139249 is an equidigital number, since it uses as much as digits as its factorization.

4511618139249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264 (or 632 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The spelling of 4511618139249 in words is "four trillion, five hundred eleven billion, six hundred eighteen million, one hundred thirty-nine thousand, two hundred forty-nine".