38884628549 has 4 divisors (see below), whose sum is σ = 41875753836. Its totient is φ = 35893503264.

The previous prime is 38884628539. The next prime is 38884628551. The reversal of 38884628549 is 94582648883.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1503112900 + 37381515649 = 38770^2 + 193343^2 .

It is a cyclic number.

It is not a de Polignac number, because 38884628549 - 2¹² = 38884624453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38884628509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1495562624 + ... + 1495562649.

It is an arithmetic number, because the mean of its divisors is an integer number (10468938459).

Almost surely, 2^38884628549 is an apocalyptic number.

It is an amenable number.

38884628549 is a deficient number, since it is larger than the sum of its proper divisors (2991125287).

38884628549 is a wasteful number, since it uses less digits than its factorization.

38884628549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2991125286.

The product of its digits is 106168320, while the sum is 65.

The spelling of 38884628549 in words is "thirty-eight billion, eight hundred eighty-four million, six hundred twenty-eight thousand, five hundred forty-nine".