7738368997 has 2 divisors, whose sum is σ = 7738368998. Its totient is φ = 7738368996.

The previous prime is 7738368991. The next prime is 7738369057. The reversal of 7738368997 is 7998638377.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7704275076 + 34093921 = 87774^2 + 5839^2 .

It is an emirp because it is prime and its reverse (7998638377) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7738368997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7738368991) 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, 3869184498 + 3869184499.

It is an arithmetic number, because the mean of its divisors is an integer number (3869184499).

Almost surely, 2^7738368997 is an apocalyptic number.

It is an amenable number.

7738368997 is a deficient number, since it is larger than the sum of its proper divisors (1).

7738368997 is an equidigital number, since it uses as much as digits as its factorization.

7738368997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96018048, while the sum is 67.

The square root of 7738368997 is about 87967.9998465351. Note that the first 3 decimals coincide. The cubic root of 7738368997 is about 1977.9553253259.

The spelling of 7738368997 in words is "seven billion, seven hundred thirty-eight million, three hundred sixty-eight thousand, nine hundred ninety-seven".