38091745 has 16 divisors (see below), whose sum is σ = 46448640. Its totient is φ = 29985984.

The previous prime is 38091743. The next prime is 38091763. The reversal of 38091745 is 54719083.

38091745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 38091745 - 2¹ = 38091743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38091743) 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 in 15 ways as a sum of consecutive naturals, for example, 141471 + ... + 141739.

It is an arithmetic number, because the mean of its divisors is an integer number (2903040).

Almost surely, 2^38091745 is an apocalyptic number.

It is an amenable number.

38091745 is a deficient number, since it is larger than the sum of its proper divisors (8356895).

38091745 is a wasteful number, since it uses less digits than its factorization.

38091745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 38091745 is about 6171.8510189408. The cubic root of 38091745 is about 336.4678885185.

The spelling of 38091745 in words is "thirty-eight million, ninety-one thousand, seven hundred forty-five".