18914434824 has 16 divisors (see below), whose sum is σ = 47286087120. Its totient is φ = 6304811600.

The previous prime is 18914434823. The next prime is 18914434867. The reversal of 18914434824 is 42843441981.

It is a super-3 number, since 3×18914434824³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (18914434823) 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 3 ways as a sum of consecutive naturals, for example, 394050702 + ... + 394050749.

It is an arithmetic number, because the mean of its divisors is an integer number (2955380445).

Almost surely, 2^18914434824 is an apocalyptic number.

It is an amenable number.

18914434824 is an abundant number, since it is smaller than the sum of its proper divisors (28371652296).

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

18914434824 is a wasteful number, since it uses less digits than its factorization.

18914434824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788101460 (or 788101456 counting only the distinct ones).

The product of its digits is 884736, while the sum is 48.

The spelling of 18914434824 in words is "eighteen billion, nine hundred fourteen million, four hundred thirty-four thousand, eight hundred twenty-four".