18650080 has 48 divisors (see below), whose sum is σ = 45151344. Its totient is φ = 7275520.

The previous prime is 18650063. The next prime is 18650087. The reversal of 18650080 is 8005681.

It is a happy number.

18650080 is nontrivially palindromic in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18650087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5139 + ... + 7981.

It is an arithmetic number, because the mean of its divisors is an integer number (940653).

Almost surely, 2^18650080 is an apocalyptic number.

18650080 is a gapful number since it is divisible by the number (10) 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 18650080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22575672).

18650080 is an abundant number, since it is smaller than the sum of its proper divisors (26501264).

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

18650080 is a wasteful number, since it uses less digits than its factorization.

18650080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2899 (or 2891 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 18650080 is about 4318.5738386648. The cubic root of 18650080 is about 265.1918866531.

The spelling of 18650080 in words is "eighteen million, six hundred fifty thousand, eighty".