388173949813 has 12 divisors (see below), whose sum is σ = 420754700928. Its totient is φ = 357952692240.

The previous prime is 388173949811. The next prime is 388173949841. The reversal of 388173949813 is 318949371883.

It is not a de Polignac number, because 388173949813 - 2¹ = 388173949811 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 (388173949811) 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, 991395 + ... + 1326352.

It is an arithmetic number, because the mean of its divisors is an integer number (35062891744).

Almost surely, 2^388173949813 is an apocalyptic number.

It is an amenable number.

388173949813 is a deficient number, since it is larger than the sum of its proper divisors (32580751115).

388173949813 is a wasteful number, since it uses less digits than its factorization.

388173949813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318764 (or 2318751 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 64.

The spelling of 388173949813 in words is "three hundred eighty-eight billion, one hundred seventy-three million, nine hundred forty-nine thousand, eight hundred thirteen".