18302130 has 192 divisors, whose sum is σ = 62899200. Its totient is φ = 3576960.

The previous prime is 18302107. The next prime is 18302143. The reversal of 18302130 is 3120381.

18302130 is nontrivially palindromic in base 12.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 131601 + ... + 131739.

It is an arithmetic number, because the mean of its divisors is an integer number (327600).

Almost surely, 2^18302130 is an apocalyptic number.

18302130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18302130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31449600).

18302130 is an abundant number, since it is smaller than the sum of its proper divisors (44597070).

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

18302130 is a wasteful number, since it uses less digits than its factorization.

18302130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 18302130 is about 4278.0988768377. The cubic root of 18302130 is about 263.5323159120.

The spelling of 18302130 in words is "eighteen million, three hundred two thousand, one hundred thirty".