4263945557 has 2 divisors, whose sum is σ = 4263945558. Its totient is φ = 4263945556.

The previous prime is 4263945547. The next prime is 4263945571. The reversal of 4263945557 is 7555493624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3159114436 + 1104831121 = 56206^2 + 33239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4263945557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4263945547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2131972778 + 2131972779.

It is an arithmetic number, because the mean of its divisors is an integer number (2131972779).

Almost surely, 2^4263945557 is an apocalyptic number.

It is an amenable number.

4263945557 is a deficient number, since it is larger than the sum of its proper divisors (1).

4263945557 is an equidigital number, since it uses as much as digits as its factorization.

4263945557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536000, while the sum is 50.

The square root of 4263945557 is about 65298.8939952278. The cubic root of 4263945557 is about 1621.5756601055.

The spelling of 4263945557 in words is "four billion, two hundred sixty-three million, nine hundred forty-five thousand, five hundred fifty-seven".