38356457687 has 4 divisors (see below), whose sum is σ = 38359779576. Its totient is φ = 38353135800.

The previous prime is 38356457611. The next prime is 38356457693. The reversal of 38356457687 is 78675465383.

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

It is a cyclic number.

It is not a de Polignac number, because 38356457687 - 2²⁰ = 38355409111 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 (38356457287) 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, 1643564 + ... + 1666737.

It is an arithmetic number, because the mean of its divisors is an integer number (9589944894).

Almost surely, 2^38356457687 is an apocalyptic number.

38356457687 is a deficient number, since it is larger than the sum of its proper divisors (3321889).

38356457687 is a wasteful number, since it uses less digits than its factorization.

38356457687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3321888.

The product of its digits is 101606400, while the sum is 62.

The spelling of 38356457687 in words is "thirty-eight billion, three hundred fifty-six million, four hundred fifty-seven thousand, six hundred eighty-seven".