4939728191 has 2 divisors, whose sum is σ = 4939728192. Its totient is φ = 4939728190.

The previous prime is 4939728169. The next prime is 4939728223. The reversal of 4939728191 is 1918279394.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4939728191 - 2²⁶ = 4872619327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4939728121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2469864095 + 2469864096.

It is an arithmetic number, because the mean of its divisors is an integer number (2469864096).

Almost surely, 2^4939728191 is an apocalyptic number.

4939728191 is a deficient number, since it is larger than the sum of its proper divisors (1).

4939728191 is an equidigital number, since it uses as much as digits as its factorization.

4939728191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 53.

The square root of 4939728191 is about 70283.1999200378. The cubic root of 4939728191 is about 1703.0772626503.

The spelling of 4939728191 in words is "four billion, nine hundred thirty-nine million, seven hundred twenty-eight thousand, one hundred ninety-one".