38648549992 has 16 divisors (see below), whose sum is σ = 78040341540. Its totient is φ = 17837792256.

The previous prime is 38648549987. The next prime is 38648549993. The reversal of 38648549992 is 29994584683.

It can be written as a sum of positive squares in 2 ways, for example, as 38594174116 + 54375876 = 196454^2 + 7374^2 .

It is not an unprimeable number, because it can be changed into a prime (38648549993) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 185810233 + ... + 185810440.

Almost surely, 2^38648549992 is an apocalyptic number.

It is an amenable number.

38648549992 is an abundant number, since it is smaller than the sum of its proper divisors (39391791548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38648549992 is a wasteful number, since it uses less digits than its factorization.

38648549992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371620692 (or 371620688 counting only the distinct ones).

The product of its digits is 134369280, while the sum is 67.

The spelling of 38648549992 in words is "thirty-eight billion, six hundred forty-eight million, five hundred forty-nine thousand, nine hundred ninety-two".