38928213658 has 16 divisors (see below), whose sum is σ = 59492359656. Its totient is φ = 19100838400.

The previous prime is 38928213647. The next prime is 38928213697. The reversal of 38928213658 is 85631282983.

It can be written as a sum of positive squares in 4 ways, for example, as 35104893769 + 3823319889 = 187363^2 + 61833^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38928213599 and 38928213608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 829891 + ... + 875542.

Almost surely, 2^38928213658 is an apocalyptic number.

38928213658 is a deficient number, since it is larger than the sum of its proper divisors (20564145998).

38928213658 is a wasteful number, since it uses less digits than its factorization.

38928213658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705649.

The product of its digits is 4976640, while the sum is 55.

The spelling of 38928213658 in words is "thirty-eight billion, nine hundred twenty-eight million, two hundred thirteen thousand, six hundred fifty-eight".