18203450496 has 256 divisors, whose sum is σ = 61055078400. Its totient is φ = 4667719680.

The previous prime is 18203450467. The next prime is 18203450509. The reversal of 18203450496 is 69405430281.

It is a super-4 number, since 4×18203450496⁴ (a number of 42 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2331976 + ... + 2339768.

It is an arithmetic number, because the mean of its divisors is an integer number (238496400).

Almost surely, 2^18203450496 is an apocalyptic number.

18203450496 is a gapful number since it is divisible by the number (16) 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 18203450496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30527539200).

18203450496 is an abundant number, since it is smaller than the sum of its proper divisors (42851627904).

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

18203450496 is a wasteful number, since it uses less digits than its factorization.

18203450496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7907 (or 7895 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 18203450496 in words is "eighteen billion, two hundred three million, four hundred fifty thousand, four hundred ninety-six".