18881464860 has 36 divisors (see below), whose sum is σ = 57273777288. Its totient is φ = 5035057248.

The previous prime is 18881464843. The next prime is 18881464937. The reversal of 18881464860 is 6846418881.

It is a happy number.

18881464860 is a `hidden beast` number, since 1 + 88 + 81 + 4 + 6 + 486 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 18881464797 and 18881464806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52448334 + ... + 52448693.

It is an arithmetic number, because the mean of its divisors is an integer number (1590938258).

Almost surely, 2^18881464860 is an apocalyptic number.

18881464860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18881464860 is an abundant number, since it is smaller than the sum of its proper divisors (38392312428).

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

18881464860 is a wasteful number, since it uses less digits than its factorization.

18881464860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104897042 (or 104897037 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 54.

The spelling of 18881464860 in words is "eighteen billion, eight hundred eighty-one million, four hundred sixty-four thousand, eight hundred sixty".