18203794392 has 384 divisors, whose sum is σ = 56881440000. Its totient is φ = 4832400384.

The previous prime is 18203794387. The next prime is 18203794393. The reversal of 18203794392 is 29349730281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18203794393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 167007234 + ... + 167007342.

It is an arithmetic number, because the mean of its divisors is an integer number (148128750).

Almost surely, 2^18203794392 is an apocalyptic number.

18203794392 is a gapful number since it is divisible by the number (12) 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 18203794392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28440720000).

18203794392 is an abundant number, since it is smaller than the sum of its proper divisors (38677645608).

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

18203794392 is a wasteful number, since it uses less digits than its factorization.

18203794392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 18203794392 in words is "eighteen billion, two hundred three million, seven hundred ninety-four thousand, three hundred ninety-two".