9638692057 has 2 divisors, whose sum is σ = 9638692058. Its totient is φ = 9638692056.

The previous prime is 9638692031. The next prime is 9638692109. The reversal of 9638692057 is 7502968369.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6492491776 + 3146200281 = 80576^2 + 56091^2 .

It is a cyclic number.

It is not a de Polignac number, because 9638692057 - 2⁷ = 9638691929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9638691989 and 9638692007.

It is not a weakly prime, because it can be changed into another prime (9638692027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4819346028 + 4819346029.

It is an arithmetic number, because the mean of its divisors is an integer number (4819346029).

Almost surely, 2^9638692057 is an apocalyptic number.

It is an amenable number.

9638692057 is a deficient number, since it is larger than the sum of its proper divisors (1).

9638692057 is an equidigital number, since it uses as much as digits as its factorization.

9638692057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The square root of 9638692057 is about 98176.8407364996. The cubic root of 9638692057 is about 2128.1686196431.

The spelling of 9638692057 in words is "nine billion, six hundred thirty-eight million, six hundred ninety-two thousand, fifty-seven".