18341620 has 48 divisors (see below), whose sum is σ = 42311808. Its totient is φ = 6623360.

The previous prime is 18341599. The next prime is 18341621. The reversal of 18341620 is 2614381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18341621) 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, 57702 + ... + 58018.

It is an arithmetic number, because the mean of its divisors is an integer number (881496).

Almost surely, 2^18341620 is an apocalyptic number.

18341620 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 18341620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21155904).

18341620 is an abundant number, since it is smaller than the sum of its proper divisors (23970188).

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

18341620 is a wasteful number, since it uses less digits than its factorization.

18341620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 18341620 is about 4282.7117577535. The cubic root of 18341620 is about 263.7217185521.

The spelling of 18341620 in words is "eighteen million, three hundred forty-one thousand, six hundred twenty".