38648385997 has 8 divisors (see below), whose sum is σ = 41660582040. Its totient is φ = 35641796160.

The previous prime is 38648385991. The next prime is 38648386003. The reversal of 38648385997 is 79958384683.

It is an interprime number because it is at equal distance from previous prime (38648385991) and next prime (38648386003).

It can be written as a sum of positive squares in 4 ways, for example, as 377680356 + 38270705641 = 19434^2 + 195629^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38648385997 - 2¹⁹ = 38647861709 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 (38648385991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1387222 + ... + 1414807.

It is an arithmetic number, because the mean of its divisors is an integer number (5207572755).

Almost surely, 2^38648385997 is an apocalyptic number.

It is an amenable number.

38648385997 is a deficient number, since it is larger than the sum of its proper divisors (3012196043).

38648385997 is a wasteful number, since it uses less digits than its factorization.

38648385997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803103.

The product of its digits is 313528320, while the sum is 70.

The spelling of 38648385997 in words is "thirty-eight billion, six hundred forty-eight million, three hundred eighty-five thousand, nine hundred ninety-seven".