18209130 has 16 divisors (see below), whose sum is σ = 43701984. Its totient is φ = 4855760.

The previous prime is 18209101. The next prime is 18209137. The reversal of 18209130 is 3190281.

It is a self number, because there is not a number n which added to its sum of digits gives 18209130.

It is not an unprimeable number, because it can be changed into a prime (18209137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303456 + ... + 303515.

It is an arithmetic number, because the mean of its divisors is an integer number (2731374).

Almost surely, 2^18209130 is an apocalyptic number.

18209130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18209130 is an abundant number, since it is smaller than the sum of its proper divisors (25492854).

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

18209130 is a wasteful number, since it uses less digits than its factorization.

18209130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606981.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 18209130 is about 4267.2157198811. The cubic root of 18209130 is about 263.0851888057.

The spelling of 18209130 in words is "eighteen million, two hundred nine thousand, one hundred thirty".