18726343 has 4 divisors (see below), whose sum is σ = 19711960. Its totient is φ = 17740728.

The previous prime is 18726341. The next prime is 18726349. The reversal of 18726343 is 34362781.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18726343 - 2¹ = 18726341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18726299 and 18726308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18726341) 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, 492780 + ... + 492817.

It is an arithmetic number, because the mean of its divisors is an integer number (4927990).

Almost surely, 2^18726343 is an apocalyptic number.

18726343 is a deficient number, since it is larger than the sum of its proper divisors (985617).

18726343 is an equidigital number, since it uses as much as digits as its factorization.

18726343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985616.

The product of its digits is 24192, while the sum is 34.

The square root of 18726343 is about 4327.3944816714. The cubic root of 18726343 is about 265.5528649890.

The spelling of 18726343 in words is "eighteen million, seven hundred twenty-six thousand, three hundred forty-three".