38971682642 has 4 divisors (see below), whose sum is σ = 58457523966. Its totient is φ = 19485841320.

The previous prime is 38971682579. The next prime is 38971682713. The reversal of 38971682642 is 24628617983.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37140612961 + 1831069681 = 192719^2 + 42791^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9742920659 + ... + 9742920662.

Almost surely, 2^38971682642 is an apocalyptic number.

38971682642 is a deficient number, since it is larger than the sum of its proper divisors (19485841324).

38971682642 is a wasteful number, since it uses less digits than its factorization.

38971682642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19485841323.

The product of its digits is 6967296, while the sum is 56.

The spelling of 38971682642 in words is "thirty-eight billion, nine hundred seventy-one million, six hundred eighty-two thousand, six hundred forty-two".