388734205685 has 8 divisors (see below), whose sum is σ = 533121196416. Its totient is φ = 266560598160.

The previous prime is 388734205681. The next prime is 388734205687. The reversal of 388734205685 is 586502437883.

It is a happy number.

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

It is not a de Polignac number, because 388734205685 - 2² = 388734205681 is a prime.

It is a super-2 number, since 2×388734205685² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388734205681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5553345761 + ... + 5553345830.

It is an arithmetic number, because the mean of its divisors is an integer number (66640149552).

Almost surely, 2^388734205685 is an apocalyptic number.

388734205685 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

388734205685 is a deficient number, since it is larger than the sum of its proper divisors (144386990731).

388734205685 is a wasteful number, since it uses less digits than its factorization.

388734205685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11106691603.

The product of its (nonzero) digits is 38707200, while the sum is 59.

The spelling of 388734205685 in words is "three hundred eighty-eight billion, seven hundred thirty-four million, two hundred five thousand, six hundred eighty-five".