4691123557 has 2 divisors, whose sum is σ = 4691123558. Its totient is φ = 4691123556.

The previous prime is 4691123513. The next prime is 4691123561. The reversal of 4691123557 is 7553211964.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4112528641 + 578594916 = 64129^2 + 24054^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4691123557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4691123257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2345561778 + 2345561779.

It is an arithmetic number, because the mean of its divisors is an integer number (2345561779).

Almost surely, 2^4691123557 is an apocalyptic number.

It is an amenable number.

4691123557 is a deficient number, since it is larger than the sum of its proper divisors (1).

4691123557 is an equidigital number, since it uses as much as digits as its factorization.

4691123557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 43.

The square root of 4691123557 is about 68491.7772947965. Note that the first 3 decimals coincide. The cubic root of 4691123557 is about 1674.0135047469.

The spelling of 4691123557 in words is "four billion, six hundred ninety-one million, one hundred twenty-three thousand, five hundred fifty-seven".