18241660 has 12 divisors (see below), whose sum is σ = 38307528. Its totient is φ = 7296656.

The previous prime is 18241637. The next prime is 18241669. The reversal of 18241660 is 6614281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18241669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456022 + ... + 456061.

It is an arithmetic number, because the mean of its divisors is an integer number (3192294).

Almost surely, 2^18241660 is an apocalyptic number.

18241660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18241660 is an abundant number, since it is smaller than the sum of its proper divisors (20065868).

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

18241660 is a wasteful number, since it uses less digits than its factorization.

18241660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912092 (or 912090 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 18241660 is about 4271.0256379469. The cubic root of 18241660 is about 263.2417598949.

The spelling of 18241660 in words is "eighteen million, two hundred forty-one thousand, six hundred sixty".