7738404137 has 2 divisors, whose sum is σ = 7738404138. Its totient is φ = 7738404136.

The previous prime is 7738404133. The next prime is 7738404161. The reversal of 7738404137 is 7314048377.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7547439376 + 190964761 = 86876^2 + 13819^2 .

It is a cyclic number.

It is not a de Polignac number, because 7738404137 - 2² = 7738404133 is a prime.

It is not a weakly prime, because it can be changed into another prime (7738404133) 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, 3869202068 + 3869202069.

It is an arithmetic number, because the mean of its divisors is an integer number (3869202069).

Almost surely, 2^7738404137 is an apocalyptic number.

It is an amenable number.

7738404137 is a deficient number, since it is larger than the sum of its proper divisors (1).

7738404137 is an equidigital number, since it uses as much as digits as its factorization.

7738404137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 395136, while the sum is 44.

The square root of 7738404137 is about 87968.1995780293. The cubic root of 7738404137 is about 1977.9583192920.

The spelling of 7738404137 in words is "seven billion, seven hundred thirty-eight million, four hundred four thousand, one hundred thirty-seven".