18833840140 has 12 divisors (see below), whose sum is σ = 39551064336. Its totient is φ = 7533536048.

The previous prime is 18833840101. The next prime is 18833840143. The reversal of 18833840140 is 4104833881.

It is a junction number, because it is equal to n+sod(n) for n = 18833840093 and 18833840102.

It is not an unprimeable number, because it can be changed into a prime (18833840143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470845984 + ... + 470846023.

It is an arithmetic number, because the mean of its divisors is an integer number (3295922028).

Almost surely, 2^18833840140 is an apocalyptic number.

18833840140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18833840140 is an abundant number, since it is smaller than the sum of its proper divisors (20717224196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18833840140 is a wasteful number, since it uses less digits than its factorization.

18833840140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941692016 (or 941692014 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 18833840140 in words is "eighteen billion, eight hundred thirty-three million, eight hundred forty thousand, one hundred forty".