38691761 has 2 divisors, whose sum is σ = 38691762. Its totient is φ = 38691760.

The previous prime is 38691743. The next prime is 38691781. The reversal of 38691761 is 16719683.

38691761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38626225 + 65536 = 6215^2 + 256^2 .

It is a cyclic number.

It is not a de Polignac number, because 38691761 - 2¹⁰ = 38690737 is a prime.

It is a super-2 number, since 2×38691761² = 2994104738562242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38691721) 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 as a sum of consecutive naturals, namely, 19345880 + 19345881.

It is an arithmetic number, because the mean of its divisors is an integer number (19345881).

Almost surely, 2^38691761 is an apocalyptic number.

It is an amenable number.

38691761 is a deficient number, since it is larger than the sum of its proper divisors (1).

38691761 is an equidigital number, since it uses as much as digits as its factorization.

38691761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 38691761 is about 6220.2701709813. The cubic root of 38691761 is about 338.2253582718.

The spelling of 38691761 in words is "thirty-eight million, six hundred ninety-one thousand, seven hundred sixty-one".