38685775969 has 3 divisors (see below), whose sum is σ = 38685972657. Its totient is φ = 38685579282.

The previous prime is 38685775963. The next prime is 38685776039. The reversal of 38685775969 is 96957758683.

The square root of 38685775969 is 196687.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 38685775969 - 2²⁵ = 38652221537 is a prime.

It is a super-2 number, since 2×38685775969² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38685775963) 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 in 2 ways as a sum of consecutive naturals, for example, 98344 + ... + 295030.

It is an arithmetic number, because the mean of its divisors is an integer number (12895324219).

Almost surely, 2^38685775969 is an apocalyptic number.

38685775969 is the 196687-th square number.

38685775969 is the 98344-th centered octagonal number.

It is an amenable number.

38685775969 is a deficient number, since it is larger than the sum of its proper divisors (196688).

38685775969 is an frugal number, since it uses more digits than its factorization.

38685775969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393374 (or 196687 counting only the distinct ones).

The product of its digits is 685843200, while the sum is 73.

The spelling of 38685775969 in words is "thirty-eight billion, six hundred eighty-five million, seven hundred seventy-five thousand, nine hundred sixty-nine".