18116460 has 120 divisors (see below), whose sum is σ = 58178736. Its totient is φ = 4717440.

The previous prime is 18116453. The next prime is 18116473. The reversal of 18116460 is 6461181.

18116460 is a `hidden beast` number, since 1 + 8 + 11 + 646 + 0 = 666.

It is a super-2 number, since 2×18116460² = 656412245863200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 85755 + ... + 85965.

Almost surely, 2^18116460 is an apocalyptic number.

18116460 is a gapful number since it is divisible by the number (10) 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 18116460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29089368).

18116460 is an abundant number, since it is smaller than the sum of its proper divisors (40062276).

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

18116460 is a wasteful number, since it uses less digits than its factorization.

18116460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 18116460 is about 4256.3435011756. The cubic root of 18116460 is about 262.6381313821.

It can be divided in two parts, 181 and 16460, that added together give a square (16641 = 129²).

The spelling of 18116460 in words is "eighteen million, one hundred sixteen thousand, four hundred sixty".