38744137 has 2 divisors, whose sum is σ = 38744138. Its totient is φ = 38744136.

The previous prime is 38744129. The next prime is 38744149. The reversal of 38744137 is 73144783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37711881 + 1032256 = 6141^2 + 1016^2 .

It is a cyclic number.

It is not a de Polignac number, because 38744137 - 2³ = 38744129 is a prime.

It is a super-2 number, since 2×38744137² = 3002216303749538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38744096 and 38744105.

It is not a weakly prime, because it can be changed into another prime (38744107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19372068 + 19372069.

It is an arithmetic number, because the mean of its divisors is an integer number (19372069).

Almost surely, 2^38744137 is an apocalyptic number.

It is an amenable number.

38744137 is a deficient number, since it is larger than the sum of its proper divisors (1).

38744137 is an equidigital number, since it uses as much as digits as its factorization.

38744137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 37.

The square root of 38744137 is about 6224.4788536873. The cubic root of 38744137 is about 338.3779049942.

The spelling of 38744137 in words is "thirty-eight million, seven hundred forty-four thousand, one hundred thirty-seven".