18342645 has 32 divisors (see below), whose sum is σ = 30672000. Its totient is φ = 9348864.

The previous prime is 18342641. The next prime is 18342647. The reversal of 18342645 is 54624381.

It is not a de Polignac number, because 18342645 - 2² = 18342641 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18342641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64674 + ... + 64956.

It is an arithmetic number, because the mean of its divisors is an integer number (958500).

Almost surely, 2^18342645 is an apocalyptic number.

18342645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18342645 is a deficient number, since it is larger than the sum of its proper divisors (12329355).

18342645 is a wasteful number, since it uses less digits than its factorization.

18342645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469.

The product of its digits is 23040, while the sum is 33.

The square root of 18342645 is about 4282.8314232526. The cubic root of 18342645 is about 263.7266310540.

The spelling of 18342645 in words is "eighteen million, three hundred forty-two thousand, six hundred forty-five".