9637983997 has 2 divisors, whose sum is σ = 9637983998. Its totient is φ = 9637983996.

The previous prime is 9637983919. The next prime is 9637984043. The reversal of 9637983997 is 7993897369.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8373897081 + 1264086916 = 91509^2 + 35554^2 .

It is a cyclic number.

It is not a de Polignac number, because 9637983997 - 2⁷ = 9637983869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9637983097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4818991998 + 4818991999.

It is an arithmetic number, because the mean of its divisors is an integer number (4818991999).

Almost surely, 2^9637983997 is an apocalyptic number.

It is an amenable number.

9637983997 is a deficient number, since it is larger than the sum of its proper divisors (1).

9637983997 is an equidigital number, since it uses as much as digits as its factorization.

9637983997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138883248, while the sum is 70.

The square root of 9637983997 is about 98173.2346263481. The cubic root of 9637983997 is about 2128.1165064876.

The spelling of 9637983997 in words is "nine billion, six hundred thirty-seven million, nine hundred eighty-three thousand, nine hundred ninety-seven".