38693822642 has 4 divisors (see below), whose sum is σ = 58040733966. Its totient is φ = 19346911320.

The previous prime is 38693822627. The next prime is 38693822729. The reversal of 38693822642 is 24622839683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24622839683 = 13 ⋅1894064591.

It can be written as a sum of positive squares in only one way, i.e., 37141383841 + 1552438801 = 192721^2 + 39401^2 .

It is an unprimeable number.

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, 9673455659 + ... + 9673455662.

Almost surely, 2^38693822642 is an apocalyptic number.

38693822642 is a deficient number, since it is larger than the sum of its proper divisors (19346911324).

38693822642 is a wasteful number, since it uses less digits than its factorization.

38693822642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19346911323.

The product of its digits is 5971968, while the sum is 53.

The spelling of 38693822642 in words is "thirty-eight billion, six hundred ninety-three million, eight hundred twenty-two thousand, six hundred forty-two".