38916636529 has 3 divisors (see below), whose sum is σ = 38916833803. Its totient is φ = 38916439256.

The previous prime is 38916636509. The next prime is 38916636541. The reversal of 38916636529 is 92563661983.

The square root of 38916636529 is 197273.

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 can be written as a sum of positive squares in only one way, i.e., 38112800625 + 803835904 = 195225^2 + 28352^2 .

It is not a de Polignac number, because 38916636529 - 2⁵ = 38916636497 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38916636509) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 98637 + ... + 295909.

Almost surely, 2^38916636529 is an apocalyptic number.

38916636529 is the 197273-rd square number.

38916636529 is the 98637-th centered octagonal number.

It is an amenable number.

38916636529 is a deficient number, since it is larger than the sum of its proper divisors (197274).

38916636529 is an frugal number, since it uses more digits than its factorization.

38916636529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394546 (or 197273 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 58.

The spelling of 38916636529 in words is "thirty-eight billion, nine hundred sixteen million, six hundred thirty-six thousand, five hundred twenty-nine".