387904166528 has 32 divisors (see below), whose sum is σ = 772992641460. Its totient is φ = 193898170368.

The previous prime is 387904166527. The next prime is 387904166563. The reversal of 387904166528 is 825661409783.

It can be written as a sum of positive squares in 2 ways, for example, as 205397491264 + 182506675264 = 453208^2 + 427208^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (387904166527) 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 3 ways as a sum of consecutive naturals, for example, 43076 + ... + 881852.

It is a 1-persistent number, because it is pandigital, but 2⋅387904166528 = 775808333056 is not.

Almost surely, 2^387904166528 is an apocalyptic number.

It is an amenable number.

387904166528 is a deficient number, since it is larger than the sum of its proper divisors (385088474932).

387904166528 is an equidigital number, since it uses as much as digits as its factorization.

387904166528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842404 (or 842392 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 387904166528 in words is "three hundred eighty-seven billion, nine hundred four million, one hundred sixty-six thousand, five hundred twenty-eight".