4791378191 has 2 divisors, whose sum is σ = 4791378192. Its totient is φ = 4791378190.

The previous prime is 4791378127. The next prime is 4791378217. The reversal of 4791378191 is 1918731974.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4791378191 - 2⁶ = 4791378127 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4791378091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2395689095 + 2395689096.

It is an arithmetic number, because the mean of its divisors is an integer number (2395689096).

Almost surely, 2^4791378191 is an apocalyptic number.

4791378191 is a deficient number, since it is larger than the sum of its proper divisors (1).

4791378191 is an equidigital number, since it uses as much as digits as its factorization.

4791378191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 50.

The square root of 4791378191 is about 69219.7817896012. The cubic root of 4791378191 is about 1685.8547370400.

The spelling of 4791378191 in words is "four billion, seven hundred ninety-one million, three hundred seventy-eight thousand, one hundred ninety-one".