18909053835 has 64 divisors (see below), whose sum is σ = 35454827520. Its totient is φ = 8424990720.

The previous prime is 18909053827. The next prime is 18909053909. The reversal of 18909053835 is 53835090981.

It is not a de Polignac number, because 18909053835 - 2³ = 18909053827 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6968439 + ... + 6971151.

It is an arithmetic number, because the mean of its divisors is an integer number (553981680).

Almost surely, 2^18909053835 is an apocalyptic number.

18909053835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18909053835 is a deficient number, since it is larger than the sum of its proper divisors (16545773685).

18909053835 is a wasteful number, since it uses less digits than its factorization.

18909053835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4388.

The product of its (nonzero) digits is 1166400, while the sum is 51.

The spelling of 18909053835 in words is "eighteen billion, nine hundred nine million, fifty-three thousand, eight hundred thirty-five".