4499618681 has 4 divisors (see below), whose sum is σ = 4562993664. Its totient is φ = 4436243700.

The previous prime is 4499618671. The next prime is 4499618707. The reversal of 4499618681 is 1868169944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4499618681 - 2²⁶ = 4432509817 is a prime.

It is a super-2 number, since 2×4499618681² = 40493136548808359522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4499618671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31687385 + ... + 31687526.

It is an arithmetic number, because the mean of its divisors is an integer number (1140748416).

Almost surely, 2^4499618681 is an apocalyptic number.

It is an amenable number.

4499618681 is a deficient number, since it is larger than the sum of its proper divisors (63374983).

4499618681 is an equidigital number, since it uses as much as digits as its factorization.

4499618681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63374982.

The product of its digits is 2985984, while the sum is 56.

The square root of 4499618681 is about 67079.1970807642. The cubic root of 4499618681 is about 1650.9169902561.

The spelling of 4499618681 in words is "four billion, four hundred ninety-nine million, six hundred eighteen thousand, six hundred eighty-one".