18049164 has 96 divisors (see below), whose sum is σ = 52039680. Its totient is φ = 4753728.

The previous prime is 18049147. The next prime is 18049169. The reversal of 18049164 is 46194081.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (18049169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68497 + ... + 68759.

It is an arithmetic number, because the mean of its divisors is an integer number (542080).

Almost surely, 2^18049164 is an apocalyptic number.

18049164 is a gapful number since it is divisible by the number (14) 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 18049164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26019840).

18049164 is an abundant number, since it is smaller than the sum of its proper divisors (33990516).

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

18049164 is a wasteful number, since it uses less digits than its factorization.

18049164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 18049164 is about 4248.4307691193. The cubic root of 18049164 is about 262.3125264586.

The spelling of 18049164 in words is "eighteen million, forty-nine thousand, one hundred sixty-four".