387191040591 has 8 divisors (see below), whose sum is σ = 519421928320. Its totient is φ = 256543756632.

The previous prime is 387191040589. The next prime is 387191040601. The reversal of 387191040591 is 195040191783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 387191040591 - 2¹ = 387191040589 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 387191040591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387191040491) 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 7 ways as a sum of consecutive naturals, for example, 395900371 + ... + 395901348.

It is an arithmetic number, because the mean of its divisors is an integer number (64927741040).

Almost surely, 2^387191040591 is an apocalyptic number.

387191040591 is a deficient number, since it is larger than the sum of its proper divisors (132230887729).

387191040591 is a wasteful number, since it uses less digits than its factorization.

387191040591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791801885.

The product of its (nonzero) digits is 272160, while the sum is 48.

The spelling of 387191040591 in words is "three hundred eighty-seven billion, one hundred ninety-one million, forty thousand, five hundred ninety-one".