38887902643 has 4 divisors (see below), whose sum is σ = 38891312488. Its totient is φ = 38884492800.

The previous prime is 38887902563. The next prime is 38887902649. The reversal of 38887902643 is 34620978883.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38887902643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38887902649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1687758 + ... + 1710643.

It is an arithmetic number, because the mean of its divisors is an integer number (9722828122).

Almost surely, 2^38887902643 is an apocalyptic number.

38887902643 is a deficient number, since it is larger than the sum of its proper divisors (3409845).

38887902643 is a wasteful number, since it uses less digits than its factorization.

38887902643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3409844.

The product of its (nonzero) digits is 13934592, while the sum is 58.

The spelling of 38887902643 in words is "thirty-eight billion, eight hundred eighty-seven million, nine hundred two thousand, six hundred forty-three".