38545693 has 2 divisors, whose sum is σ = 38545694. Its totient is φ = 38545692.

The previous prime is 38545657. The next prime is 38545697. The reversal of 38545693 is 39654583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38402809 + 142884 = 6197^2 + 378^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38545693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38545697) 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, 19272846 + 19272847.

It is an arithmetic number, because the mean of its divisors is an integer number (19272847).

Almost surely, 2^38545693 is an apocalyptic number.

It is an amenable number.

38545693 is a deficient number, since it is larger than the sum of its proper divisors (1).

38545693 is an equidigital number, since it uses as much as digits as its factorization.

38545693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 43.

The square root of 38545693 is about 6208.5177780208. The cubic root of 38545693 is about 337.7992020699.

The spelling of 38545693 in words is "thirty-eight million, five hundred forty-five thousand, six hundred ninety-three".