387855352873 has 4 divisors (see below), whose sum is σ = 388327771908. Its totient is φ = 387382933840.

The previous prime is 387855352867. The next prime is 387855352933. The reversal of 387855352873 is 378253558783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 378253558783 = 100411 ⋅3767053.

It can be written as a sum of positive squares in 2 ways, for example, as 130976676649 + 256878676224 = 361907^2 + 506832^2 .

It is a cyclic number.

It is not a de Polignac number, because 387855352873 - 2¹⁷ = 387855221801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387855352273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236208286 + ... + 236209927.

It is an arithmetic number, because the mean of its divisors is an integer number (97081942977).

Almost surely, 2^387855352873 is an apocalyptic number.

It is an amenable number.

387855352873 is a deficient number, since it is larger than the sum of its proper divisors (472419035).

387855352873 is an equidigital number, since it uses as much as digits as its factorization.

387855352873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472419034.

The product of its digits is 169344000, while the sum is 64.

The spelling of 387855352873 in words is "three hundred eighty-seven billion, eight hundred fifty-five million, three hundred fifty-two thousand, eight hundred seventy-three".