38684396786 has 32 divisors (see below), whose sum is σ = 66572782848. Its totient is φ = 16514933760.

The previous prime is 38684396783. The next prime is 38684396879. The reversal of 38684396786 is 68769348683.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (38684396783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12719426 + ... + 12722466.

It is an arithmetic number, because the mean of its divisors is an integer number (2080399464).

Almost surely, 2^38684396786 is an apocalyptic number.

38684396786 is a deficient number, since it is larger than the sum of its proper divisors (27888386062).

38684396786 is a wasteful number, since it uses less digits than its factorization.

38684396786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6266.

The product of its digits is 250822656, while the sum is 68.

The spelling of 38684396786 in words is "thirty-eight billion, six hundred eighty-four million, three hundred ninety-six thousand, seven hundred eighty-six".