38657693 has 2 divisors, whose sum is σ = 38657694. Its totient is φ = 38657692.

The previous prime is 38657681. The next prime is 38657699. The reversal of 38657693 is 39675683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36264484 + 2393209 = 6022^2 + 1547^2 .

It is a cyclic number.

It is not a de Polignac number, because 38657693 - 2¹⁸ = 38395549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38657699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19328846 + 19328847.

It is an arithmetic number, because the mean of its divisors is an integer number (19328847).

Almost surely, 2^38657693 is an apocalyptic number.

It is an amenable number.

38657693 is a deficient number, since it is larger than the sum of its proper divisors (1).

38657693 is an equidigital number, since it uses as much as digits as its factorization.

38657693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 47.

The square root of 38657693 is about 6217.5311016512. The cubic root of 38657693 is about 338.1260602580.

The spelling of 38657693 in words is "thirty-eight million, six hundred fifty-seven thousand, six hundred ninety-three".