4998891641 has 4 divisors (see below), whose sum is σ = 5073502032. Its totient is φ = 4924281252.

The previous prime is 4998891629. The next prime is 4998891647. The reversal of 4998891641 is 1461988994.

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 a de Polignac number, because none of the positive numbers 2^k-4998891641 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37305095 + ... + 37305228.

It is an arithmetic number, because the mean of its divisors is an integer number (1268375508).

Almost surely, 2^4998891641 is an apocalyptic number.

It is an amenable number.

4998891641 is a deficient number, since it is larger than the sum of its proper divisors (74610391).

4998891641 is an equidigital number, since it uses as much as digits as its factorization.

4998891641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74610390.

The product of its digits is 4478976, while the sum is 59.

The square root of 4998891641 is about 70702.8404026316. The cubic root of 4998891641 is about 1709.8495861907.

The spelling of 4998891641 in words is "four billion, nine hundred ninety-eight million, eight hundred ninety-one thousand, six hundred forty-one".