4993945641 has 6 divisors (see below), whose sum is σ = 7213477050. Its totient is φ = 3329297088.

The previous prime is 4993945637. The next prime is 4993945643. The reversal of 4993945641 is 1465493994.

It is a happy number.

4993945641 is a `hidden beast` number, since 49 + 9 + 39 + 4 + 564 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4955456025 + 38489616 = 70395^2 + 6204^2 .

It is not a de Polignac number, because 4993945641 - 2² = 4993945637 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4993945643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277441416 + ... + 277441433.

It is an arithmetic number, because the mean of its divisors is an integer number (1202246175).

Almost surely, 2^4993945641 is an apocalyptic number.

It is an amenable number.

4993945641 is a deficient number, since it is larger than the sum of its proper divisors (2219531409).

4993945641 is a wasteful number, since it uses less digits than its factorization.

4993945641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554882855 (or 554882852 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The square root of 4993945641 is about 70667.8543681637. The cubic root of 4993945641 is about 1709.2854806956.

The spelling of 4993945641 in words is "four billion, nine hundred ninety-three million, nine hundred forty-five thousand, six hundred forty-one".