4998891643 has 8 divisors (see below), whose sum is σ = 5089815360. Its totient is φ = 4908174600.

The previous prime is 4998891629. The next prime is 4998891647. The reversal of 4998891643 is 3461988994.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-4998891643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4998891647) 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 7 ways as a sum of consecutive naturals, for example, 2433 + ... + 100018.

It is an arithmetic number, because the mean of its divisors is an integer number (636226920).

Almost surely, 2^4998891643 is an apocalyptic number.

4998891643 is a deficient number, since it is larger than the sum of its proper divisors (90923717).

4998891643 is a wasteful number, since it uses less digits than its factorization.

4998891643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103337.

The product of its digits is 13436928, while the sum is 61.

The square root of 4998891643 is about 70702.8404167753. The cubic root of 4998891643 is about 1709.8495864187.

The spelling of 4998891643 in words is "four billion, nine hundred ninety-eight million, eight hundred ninety-one thousand, six hundred forty-three".