4923577781 has 2 divisors, whose sum is σ = 4923577782. Its totient is φ = 4923577780.

The previous prime is 4923577727. The next prime is 4923577793. The reversal of 4923577781 is 1877753294.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4361413681 + 562164100 = 66041^2 + 23710^2 .

It is a cyclic number.

It is not a de Polignac number, because 4923577781 - 2⁶ = 4923577717 is a prime.

It is a super-2 number, since 2×4923577781² = 48483236331113767922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4923570781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2461788890 + 2461788891.

It is an arithmetic number, because the mean of its divisors is an integer number (2461788891).

Almost surely, 2^4923577781 is an apocalyptic number.

It is an amenable number.

4923577781 is a deficient number, since it is larger than the sum of its proper divisors (1).

4923577781 is an equidigital number, since it uses as much as digits as its factorization.

4923577781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2963520, while the sum is 53.

The square root of 4923577781 is about 70168.2106156342. The cubic root of 4923577781 is about 1701.2191693980.

The spelling of 4923577781 in words is "four billion, nine hundred twenty-three million, five hundred seventy-seven thousand, seven hundred eighty-one".