38684036669 has 2 divisors, whose sum is σ = 38684036670. Its totient is φ = 38684036668.

The previous prime is 38684036663. The next prime is 38684036719. The reversal of 38684036669 is 96663048683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35142001444 + 3542035225 = 187462^2 + 59515^2 .

It is a cyclic number.

It is not a de Polignac number, because 38684036669 - 2²⁰ = 38682988093 is a prime.

It is a super-2 number, since 2×38684036669² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38684036663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19342018334 + 19342018335.

It is an arithmetic number, because the mean of its divisors is an integer number (19342018335).

Almost surely, 2^38684036669 is an apocalyptic number.

It is an amenable number.

38684036669 is a deficient number, since it is larger than the sum of its proper divisors (1).

38684036669 is an equidigital number, since it uses as much as digits as its factorization.

38684036669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26873856, while the sum is 59.

The spelling of 38684036669 in words is "thirty-eight billion, six hundred eighty-four million, thirty-six thousand, six hundred sixty-nine".