38442137 has 2 divisors, whose sum is σ = 38442138. Its totient is φ = 38442136.

The previous prime is 38442113. The next prime is 38442143. The reversal of 38442137 is 73124483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20286016 + 18156121 = 4504^2 + 4261^2 .

It is a cyclic number.

It is not a de Polignac number, because 38442137 - 2¹² = 38438041 is a prime.

It is not a weakly prime, because it can be changed into another prime (38445137) 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, 19221068 + 19221069.

It is an arithmetic number, because the mean of its divisors is an integer number (19221069).

Almost surely, 2^38442137 is an apocalyptic number.

It is an amenable number.

38442137 is a deficient number, since it is larger than the sum of its proper divisors (1).

38442137 is an equidigital number, since it uses as much as digits as its factorization.

38442137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 32.

The square root of 38442137 is about 6200.1723363145. The cubic root of 38442137 is about 337.4964228245.

The spelling of 38442137 in words is "thirty-eight million, four hundred forty-two thousand, one hundred thirty-seven".