38757613 has 2 divisors, whose sum is σ = 38757614. Its totient is φ = 38757612.

The previous prime is 38757559. The next prime is 38757673. The reversal of 38757613 is 31675783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23687689 + 15069924 = 4867^2 + 3882^2 .

It is an emirp because it is prime and its reverse (31675783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38757613 - 2²¹ = 36660461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38757673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19378806 + 19378807.

It is an arithmetic number, because the mean of its divisors is an integer number (19378807).

Almost surely, 2^38757613 is an apocalyptic number.

It is an amenable number.

38757613 is a deficient number, since it is larger than the sum of its proper divisors (1).

38757613 is an equidigital number, since it uses as much as digits as its factorization.

38757613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 40.

The square root of 38757613 is about 6225.5612598383. The cubic root of 38757613 is about 338.4171320224.

The spelling of 38757613 in words is "thirty-eight million, seven hundred fifty-seven thousand, six hundred thirteen".