18533473838490 has 128 divisors (see below), whose sum is σ = 49836475809792. Its totient is φ = 4380158280960.

The previous prime is 18533473838483. The next prime is 18533473838507. The reversal of 18533473838490 is 9483837433581.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4499842 + ... + 7570701.

It is an arithmetic number, because the mean of its divisors is an integer number (389347467264).

Almost surely, 2^{18533473838490} is an apocalyptic number.

18533473838490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18533473838490 is an abundant number, since it is smaller than the sum of its proper divisors (31303001971302).

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

18533473838490 is a wasteful number, since it uses less digits than its factorization.

18533473838490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12070724.

The product of its (nonzero) digits is 209018880, while the sum is 66.

The spelling of 18533473838490 in words is "eighteen trillion, five hundred thirty-three billion, four hundred seventy-three million, eight hundred thirty-eight thousand, four hundred ninety".