38851838523 has 6 divisors (see below), whose sum is σ = 56119322324. Its totient is φ = 25901225676.

The previous prime is 38851838513. The next prime is 38851838537. The reversal of 38851838523 is 32583815883.

It is a happy number.

38851838523 is a `hidden beast` number, since 3 + 8 + 85 + 1 + 8 + 38 + 523 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-38851838523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38851838523.

It is not an unprimeable number, because it can be changed into a prime (38851838513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2158435465 + ... + 2158435482.

Almost surely, 2^38851838523 is an apocalyptic number.

38851838523 is a deficient number, since it is larger than the sum of its proper divisors (17267483801).

38851838523 is a wasteful number, since it uses less digits than its factorization.

38851838523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4316870953 (or 4316870950 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The spelling of 38851838523 in words is "thirty-eight billion, eight hundred fifty-one million, eight hundred thirty-eight thousand, five hundred twenty-three".