4791264781 has 2 divisors, whose sum is σ = 4791264782. Its totient is φ = 4791264780.

The previous prime is 4791264773. The next prime is 4791264833. The reversal of 4791264781 is 1874621974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4718316100 + 72948681 = 68690^2 + 8541^2 .

It is a cyclic number.

It is not a de Polignac number, because 4791264781 - 2³ = 4791264773 is a prime.

It is a super-2 number, since 2×4791264781² = 45912436403301955922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4791264701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2395632390 + 2395632391.

It is an arithmetic number, because the mean of its divisors is an integer number (2395632391).

Almost surely, 2^4791264781 is an apocalyptic number.

It is an amenable number.

4791264781 is a deficient number, since it is larger than the sum of its proper divisors (1).

4791264781 is an equidigital number, since it uses as much as digits as its factorization.

4791264781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 49.

The square root of 4791264781 is about 69218.9625825178. The cubic root of 4791264781 is about 1685.8414357665.

The spelling of 4791264781 in words is "four billion, seven hundred ninety-one million, two hundred sixty-four thousand, seven hundred eighty-one".