4999656618 has 96 divisors (see below), whose sum is σ = 12462128640. Its totient is φ = 1432680480.

The previous prime is 4999656617. The next prime is 4999656619. The reversal of 4999656618 is 8166569994.

4999656618 is a `hidden beast` number, since 4 + 9 + 9 + 9 + 6 + 5 + 6 + 618 = 666.

It is an interprime number because it is at equal distance from previous prime (4999656617) and next prime (4999656619).

It is a super-2 number, since 2×4999656618² = 49993132595822395848, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4999656617) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3110371 + ... + 3111977.

It is an arithmetic number, because the mean of its divisors is an integer number (129813840).

Almost surely, 2^4999656618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4999656618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6231064320).

4999656618 is an abundant number, since it is smaller than the sum of its proper divisors (7462472022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4999656618 is a wasteful number, since it uses less digits than its factorization.

4999656618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472 (or 2469 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 63.

The square root of 4999656618 is about 70708.2499995580. The cubic root of 4999656618 is about 1709.9368007832.

The spelling of 4999656618 in words is "four billion, nine hundred ninety-nine million, six hundred fifty-six thousand, six hundred eighteen".