38768431815 has 40 divisors (see below), whose sum is σ = 69558379440. Its totient is φ = 20657939328.

The previous prime is 38768431789. The next prime is 38768431817. The reversal of 38768431815 is 51813486783.

It is a happy number.

38768431815 is a `hidden beast` number, since 387 + 6 + 84 + 3 + 181 + 5 = 666.

It is not a de Polignac number, because 38768431815 - 2⁵ = 38768431783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38768431817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 414852 + ... + 499638.

It is an arithmetic number, because the mean of its divisors is an integer number (1738959486).

Almost surely, 2^38768431815 is an apocalyptic number.

38768431815 is a deficient number, since it is larger than the sum of its proper divisors (30789947625).

38768431815 is a wasteful number, since it uses less digits than its factorization.

38768431815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85933 (or 85924 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 38768431815 in words is "thirty-eight billion, seven hundred sixty-eight million, four hundred thirty-one thousand, eight hundred fifteen".