386786738771 has 4 divisors (see below), whose sum is σ = 390616310544. Its totient is φ = 382957167000.

The previous prime is 386786738761. The next prime is 386786738827. The reversal of 386786738771 is 177837687683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 177837687683 = 47 ⋅3783780589.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386786738771 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 386786738695 and 386786738704.

It is not an unprimeable number, because it can be changed into a prime (386786738761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1914785735 + ... + 1914785936.

It is an arithmetic number, because the mean of its divisors is an integer number (97654077636).

Almost surely, 2^386786738771 is an apocalyptic number.

386786738771 is a deficient number, since it is larger than the sum of its proper divisors (3829571773).

386786738771 is a wasteful number, since it uses less digits than its factorization.

386786738771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3829571772.

The product of its digits is 398297088, while the sum is 71.

The spelling of 386786738771 in words is "three hundred eighty-six billion, seven hundred eighty-six million, seven hundred thirty-eight thousand, seven hundred seventy-one".