18068694 has 32 divisors (see below), whose sum is σ = 41922816. Its totient is φ = 5084640.

The previous prime is 18068693. The next prime is 18068717. The reversal of 18068694 is 49686081.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18068693) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 397 + ... + 6024.

It is an arithmetic number, because the mean of its divisors is an integer number (1310088).

Almost surely, 2^18068694 is an apocalyptic number.

18068694 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18068694, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20961408).

18068694 is an abundant number, since it is smaller than the sum of its proper divisors (23854122).

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

18068694 is a wasteful number, since it uses less digits than its factorization.

18068694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6500.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 18068694 is about 4250.7286434210. The cubic root of 18068694 is about 262.4071036366.

The spelling of 18068694 in words is "eighteen million, sixty-eight thousand, six hundred ninety-four".