18406416860 has 48 divisors (see below), whose sum is σ = 41637710016. Its totient is φ = 6794437632.

The previous prime is 18406416857. The next prime is 18406416907. The reversal of 18406416860 is 6861460481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1395617 + ... + 1408743.

It is an arithmetic number, because the mean of its divisors is an integer number (867452292).

Almost surely, 2^18406416860 is an apocalyptic number.

18406416860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18406416860 is an abundant number, since it is smaller than the sum of its proper divisors (23231293156).

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

18406416860 is a wasteful number, since it uses less digits than its factorization.

18406416860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18542 (or 18540 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The spelling of 18406416860 in words is "eighteen billion, four hundred six million, four hundred sixteen thousand, eight hundred sixty".