18962468257 has 2 divisors, whose sum is σ = 18962468258. Its totient is φ = 18962468256.

The previous prime is 18962468221. The next prime is 18962468269. The reversal of 18962468257 is 75286426981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17298562576 + 1663905681 = 131524^2 + 40791^2 .

It is a cyclic number.

It is not a de Polignac number, because 18962468257 - 2¹¹ = 18962466209 is a prime.

It is not a weakly prime, because it can be changed into another prime (18962468557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9481234128 + 9481234129.

It is an arithmetic number, because the mean of its divisors is an integer number (9481234129).

Almost surely, 2^18962468257 is an apocalyptic number.

It is an amenable number.

18962468257 is a deficient number, since it is larger than the sum of its proper divisors (1).

18962468257 is an equidigital number, since it uses as much as digits as its factorization.

18962468257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11612160, while the sum is 58.

The spelling of 18962468257 in words is "eighteen billion, nine hundred sixty-two million, four hundred sixty-eight thousand, two hundred fifty-seven".