38839193794 has 4 divisors (see below), whose sum is σ = 58258790694. Its totient is φ = 19419596896.

The previous prime is 38839193759. The next prime is 38839193849. The reversal of 38839193794 is 49739193883.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49739193883 = 89 ⋅558867347.

It can be written as a sum of positive squares in only one way, i.e., 20876493169 + 17962700625 = 144487^2 + 134025^2 .

It is a super-2 number, since 2×38839193794² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9709798447 + ... + 9709798450.

Almost surely, 2^38839193794 is an apocalyptic number.

38839193794 is a deficient number, since it is larger than the sum of its proper divisors (19419596900).

38839193794 is a wasteful number, since it uses less digits than its factorization.

38839193794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19419596899.

The product of its digits is 35271936, while the sum is 64.

The spelling of 38839193794 in words is "thirty-eight billion, eight hundred thirty-nine million, one hundred ninety-three thousand, seven hundred ninety-four".