388912140385 has 16 divisors (see below), whose sum is σ = 487408166784. Its totient is φ = 297344120832.

The previous prime is 388912140371. The next prime is 388912140403. The reversal of 388912140385 is 583041219883.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 388912140385 - 2⁹ = 388912139873 is a prime.

It is a Duffinian number.

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, 1333947 + ... + 1599136.

It is an arithmetic number, because the mean of its divisors is an integer number (30463010424).

Almost surely, 2^388912140385 is an apocalyptic number.

It is an amenable number.

388912140385 is a deficient number, since it is larger than the sum of its proper divisors (98496026399).

388912140385 is a wasteful number, since it uses less digits than its factorization.

388912140385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2934264.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 388912140385 in words is "three hundred eighty-eight billion, nine hundred twelve million, one hundred forty thousand, three hundred eighty-five".