18873738240 has 352 divisors, whose sum is σ = 71381018880. Its totient is φ = 4164550656.

The previous prime is 18873738227. The next prime is 18873738287. The reversal of 18873738240 is 4283737881.

It is a happy number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3115054 + ... + 3121106.

Almost surely, 2^18873738240 is an apocalyptic number.

18873738240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18873738240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35690509440).

18873738240 is an abundant number, since it is smaller than the sum of its proper divisors (52507280640).

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

18873738240 is a wasteful number, since it uses less digits than its factorization.

18873738240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6117 (or 6099 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 51.

The spelling of 18873738240 in words is "eighteen billion, eight hundred seventy-three million, seven hundred thirty-eight thousand, two hundred forty".