18942168 has 64 divisors (see below), whose sum is σ = 54581760. Its totient is φ = 5366016.

The previous prime is 18942167. The next prime is 18942169. The reversal of 18942168 is 86124981.

It is an interprime number because it is at equal distance from previous prime (18942167) and next prime (18942169).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18942163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22605 + ... + 23427.

It is an arithmetic number, because the mean of its divisors is an integer number (852840).

Almost surely, 2^18942168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18942168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27290880).

18942168 is an abundant number, since it is smaller than the sum of its proper divisors (35639592).

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

18942168 is a wasteful number, since it uses less digits than its factorization.

18942168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976 (or 972 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 18942168 is about 4352.2601025214. The cubic root of 18942168 is about 266.5691546249.

It can be divided in two parts, 18942 and 168, that added together give a triangular number (19110 = T₁₉₅).

The spelling of 18942168 in words is "eighteen million, nine hundred forty-two thousand, one hundred sixty-eight".