38971802689 has 4 divisors (see below), whose sum is σ = 38979955456. Its totient is φ = 38963649924.

The previous prime is 38971802657. The next prime is 38971802707. The reversal of 38971802689 is 98620817983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98620817983 = 76781 ⋅1284443.

It is a cyclic number.

It is not a de Polignac number, because 38971802689 - 2⁵ = 38971802657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38971872689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4069209 + ... + 4078774.

It is an arithmetic number, because the mean of its divisors is an integer number (9744988864).

Almost surely, 2^38971802689 is an apocalyptic number.

It is an amenable number.

38971802689 is a deficient number, since it is larger than the sum of its proper divisors (8152767).

38971802689 is an equidigital number, since it uses as much as digits as its factorization.

38971802689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8152766.

The product of its (nonzero) digits is 10450944, while the sum is 61.

The spelling of 38971802689 in words is "thirty-eight billion, nine hundred seventy-one million, eight hundred two thousand, six hundred eighty-nine".