38743693 has 2 divisors, whose sum is σ = 38743694. Its totient is φ = 38743692.

The previous prime is 38743687. The next prime is 38743703. The reversal of 38743693 is 39634783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34363044 + 4380649 = 5862^2 + 2093^2 .

It is an emirp because it is prime and its reverse (39634783) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38743693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38743993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19371846 + 19371847.

It is an arithmetic number, because the mean of its divisors is an integer number (19371847).

Almost surely, 2^38743693 is an apocalyptic number.

It is an amenable number.

38743693 is a deficient number, since it is larger than the sum of its proper divisors (1).

38743693 is an equidigital number, since it uses as much as digits as its factorization.

38743693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 43.

The square root of 38743693 is about 6224.4431879486. The cubic root of 38743693 is about 338.3766124084.

The spelling of 38743693 in words is "thirty-eight million, seven hundred forty-three thousand, six hundred ninety-three".