18094140 has 36 divisors (see below), whose sum is σ = 54886104. Its totient is φ = 4825056.

The previous prime is 18094129. The next prime is 18094157. The reversal of 18094140 is 4149081.

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

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, 50082 + ... + 50441.

It is an arithmetic number, because the mean of its divisors is an integer number (1524614).

Almost surely, 2^18094140 is an apocalyptic number.

18094140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18094140 is an abundant number, since it is smaller than the sum of its proper divisors (36791964).

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

18094140 is a wasteful number, since it uses less digits than its factorization.

18094140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100538 (or 100533 counting only the distinct ones).

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

The square root of 18094140 is about 4253.7207242601. The cubic root of 18094140 is about 262.5302278115.

The spelling of 18094140 in words is "eighteen million, ninety-four thousand, one hundred forty".