38453749 has 2 divisors, whose sum is σ = 38453750. Its totient is φ = 38453748.

The previous prime is 38453747. The next prime is 38453761. The reversal of 38453749 is 94735483.

38453749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34222500 + 4231249 = 5850^2 + 2057^2 .

It is an emirp because it is prime and its reverse (94735483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38453749 - 2¹ = 38453747 is a prime.

Together with 38453747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38453741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19226874 + 19226875.

It is an arithmetic number, because the mean of its divisors is an integer number (19226875).

Almost surely, 2^38453749 is an apocalyptic number.

It is an amenable number.

38453749 is a deficient number, since it is larger than the sum of its proper divisors (1).

38453749 is an equidigital number, since it uses as much as digits as its factorization.

38453749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 43.

The square root of 38453749 is about 6201.1086911939. The cubic root of 38453749 is about 337.5304012852.

The spelling of 38453749 in words is "thirty-eight million, four hundred fifty-three thousand, seven hundred forty-nine".