18803539876 has 81 divisors (see below), whose sum is σ = 37950622059.
Its totient is φ = 8145284400.
The previous prime is 18803539847. The next prime is 18803539879. The reversal of 18803539876 is 67893530881.
The square root of 18803539876 is 137126.
It is a perfect power (a square), and thus also a powerful number.
It is a super-2 number, since 2×188035398762 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 18803539876.
It is not an unprimeable number, because it can be changed into a prime (18803539879) 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 26 ways as a sum of consecutive naturals, for example, 69385621 + ... + 69385891.
Almost surely, 218803539876 is an apocalyptic number.
18803539876 is the 137126-th square number.
It is an amenable number.
18803539876 is an abundant number, since it is smaller than the sum of its proper divisors (19147082183).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18803539876 is a wasteful number, since it uses less digits than its factorization.
18803539876 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 614 (or 307 counting only the distinct ones).
The product of its (nonzero) digits is 8709120, while the sum is 58.
The spelling of 18803539876 in words is "eighteen billion, eight hundred three million, five hundred thirty-nine thousand, eight hundred seventy-six".