18835353505 has 8 divisors (see below), whose sum is σ = 23792025600. Its totient is φ = 14275215216.

The previous prime is 18835353503. The next prime is 18835353517. The reversal of 18835353505 is 50535353881.

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 18835353505 - 2¹ = 18835353503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18835353503) 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 7 ways as a sum of consecutive naturals, for example, 99133345 + ... + 99133534.

It is an arithmetic number, because the mean of its divisors is an integer number (2974003200).

Almost surely, 2^18835353505 is an apocalyptic number.

It is an amenable number.

18835353505 is a deficient number, since it is larger than the sum of its proper divisors (4956672095).

18835353505 is a wasteful number, since it uses less digits than its factorization.

18835353505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198266903.

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 18835353505 in words is "eighteen billion, eight hundred thirty-five million, three hundred fifty-three thousand, five hundred five".