18341630 has 16 divisors (see below), whose sum is σ = 34153920. Its totient is φ = 7083552.

The previous prime is 18341629. The next prime is 18341647. The reversal of 18341630 is 3614381.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 18341630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31334 + ... + 31913.

It is an arithmetic number, because the mean of its divisors is an integer number (2134620).

Almost surely, 2^18341630 is an apocalyptic number.

18341630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18341630 is a deficient number, since it is larger than the sum of its proper divisors (15812290).

18341630 is a wasteful number, since it uses less digits than its factorization.

18341630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63283.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 18341630 is about 4282.7129252379. The cubic root of 18341630 is about 263.7217664798.

The spelling of 18341630 in words is "eighteen million, three hundred forty-one thousand, six hundred thirty".