4993173721 has 4 divisors (see below), whose sum is σ = 4999331344. Its totient is φ = 4987016100.

The previous prime is 4993173719. The next prime is 4993173737. The reversal of 4993173721 is 1273713994.

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 not a de Polignac number, because 4993173721 - 2¹ = 4993173719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4993173821) 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 3 ways as a sum of consecutive naturals, for example, 3077595 + ... + 3079216.

It is an arithmetic number, because the mean of its divisors is an integer number (1249832836).

Almost surely, 2^4993173721 is an apocalyptic number.

It is an amenable number.

4993173721 is a deficient number, since it is larger than the sum of its proper divisors (6157623).

4993173721 is an equidigital number, since it uses as much as digits as its factorization.

4993173721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6157622.

The product of its digits is 285768, while the sum is 46.

The square root of 4993173721 is about 70662.3925507763. The cubic root of 4993173721 is about 1709.1974074077.

The spelling of 4993173721 in words is "four billion, nine hundred ninety-three million, one hundred seventy-three thousand, seven hundred twenty-one".