4977991191 has 32 divisors (see below), whose sum is σ = 7025582080. Its totient is φ = 3130293600.

The previous prime is 4977991159. The next prime is 4977991217. The reversal of 4977991191 is 1911997794.

It is not a de Polignac number, because 4977991191 - 2⁵ = 4977991159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4977991891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2474376 + ... + 2476386.

It is an arithmetic number, because the mean of its divisors is an integer number (219549440).

Almost surely, 2^4977991191 is an apocalyptic number.

4977991191 is a deficient number, since it is larger than the sum of its proper divisors (2047590889).

4977991191 is a wasteful number, since it uses less digits than its factorization.

4977991191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2707.

The product of its digits is 1285956, while the sum is 57.

The square root of 4977991191 is about 70554.8807028968. The cubic root of 4977991191 is about 1707.4632874197.

The spelling of 4977991191 in words is "four billion, nine hundred seventy-seven million, nine hundred ninety-one thousand, one hundred ninety-one".