18836064 has 180 divisors, whose sum is σ = 61380396. Its totient is φ = 5660928.

The previous prime is 18836063. The next prime is 18836089. The reversal of 18836064 is 46063881.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18836063) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 438027 + ... + 438069.

Almost surely, 2^18836064 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 18836064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30690198).

18836064 is an abundant number, since it is smaller than the sum of its proper divisors (42544332).

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

18836064 is a wasteful number, since it uses less digits than its factorization.

18836064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 18836064 is about 4340.0534558920. The cubic root of 18836064 is about 266.0704959478.

The spelling of 18836064 in words is "eighteen million, eight hundred thirty-six thousand, sixty-four".