38185686143 has 12 divisors (see below), whose sum is σ = 42547674624. Its totient is φ = 34238714400.

The previous prime is 38185686139. The next prime is 38185686157. The reversal of 38185686143 is 34168658183.

38185686143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38185686143 - 2² = 38185686139 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 (38185686193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2152703 + ... + 2170368.

It is an arithmetic number, because the mean of its divisors is an integer number (3545639552).

Almost surely, 2^38185686143 is an apocalyptic number.

38185686143 is a deficient number, since it is larger than the sum of its proper divisors (4361988481).

38185686143 is a wasteful number, since it uses less digits than its factorization.

38185686143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4323166 (or 4323155 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 53.

The spelling of 38185686143 in words is "thirty-eight billion, one hundred eighty-five million, six hundred eighty-six thousand, one hundred forty-three".