4998891663 has 12 divisors (see below), whose sum is σ = 7221254040. Its totient is φ = 3332302416.

The previous prime is 4998891647. The next prime is 4998891673. The reversal of 4998891663 is 3661988994.

It is a happy number.

4998891663 is a `hidden beast` number, since 499 + 8 + 89 + 1 + 6 + 63 = 666.

It is not a de Polignac number, because 4998891663 - 2⁴ = 4998891647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4998891663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4998891673) 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, 149220 + ... + 179622.

It is an arithmetic number, because the mean of its divisors is an integer number (601771170).

Almost surely, 2^4998891663 is an apocalyptic number.

4998891663 is a deficient number, since it is larger than the sum of its proper divisors (2222362377).

4998891663 is a wasteful number, since it uses less digits than its factorization.

4998891663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48678 (or 48675 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 63.

The square root of 4998891663 is about 70702.8405582124. The cubic root of 4998891663 is about 1709.8495886990.

The spelling of 4998891663 in words is "four billion, nine hundred ninety-eight million, eight hundred ninety-one thousand, six hundred sixty-three".