387185171812 has 48 divisors (see below), whose sum is σ = 701811712000. Its totient is φ = 186711156000.

The previous prime is 387185171783. The next prime is 387185171833. The reversal of 387185171812 is 218171581783.

It is a self number, because there is not a number n which added to its sum of digits gives 387185171812.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 48692437 + ... + 48700387.

Almost surely, 2^387185171812 is an apocalyptic number.

It is an amenable number.

387185171812 is a deficient number, since it is larger than the sum of its proper divisors (314626540188).

387185171812 is a wasteful number, since it uses less digits than its factorization.

387185171812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9272 (or 9270 counting only the distinct ones).

The product of its digits is 752640, while the sum is 52.

The spelling of 387185171812 in words is "three hundred eighty-seven billion, one hundred eighty-five million, one hundred seventy-one thousand, eight hundred twelve".