17928311385 has 8 divisors (see below), whose sum is σ = 28685298240. Its totient is φ = 9561766064.

The previous prime is 17928311381. The next prime is 17928311407. The reversal of 17928311385 is 58311382971.

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

It is a cyclic number.

It is not a de Polignac number, because 17928311385 - 2² = 17928311381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (17928311381) 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, 597610365 + ... + 597610394.

It is an arithmetic number, because the mean of its divisors is an integer number (3585662280).

Almost surely, 2^17928311385 is an apocalyptic number.

17928311385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

17928311385 is a deficient number, since it is larger than the sum of its proper divisors (10756986855).

17928311385 is a wasteful number, since it uses less digits than its factorization.

17928311385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195220767.

The product of its digits is 362880, while the sum is 48.

The spelling of 17928311385 in words is "seventeen billion, nine hundred twenty-eight million, three hundred eleven thousand, three hundred eighty-five".