18830243 has 2 divisors, whose sum is σ = 18830244. Its totient is φ = 18830242.

The previous prime is 18830233. The next prime is 18830257. The reversal of 18830243 is 34203881.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18830243 - 2⁶ = 18830179 is a prime.

It is not a weakly prime, because it can be changed into another prime (18830213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9415121 + 9415122.

It is an arithmetic number, because the mean of its divisors is an integer number (9415122).

Almost surely, 2^18830243 is an apocalyptic number.

18830243 is a deficient number, since it is larger than the sum of its proper divisors (1).

18830243 is an equidigital number, since it uses as much as digits as its factorization.

18830243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 18830243 is about 4339.3827902134. The cubic root of 18830243 is about 266.0430847730.

The spelling of 18830243 in words is "eighteen million, eight hundred thirty thousand, two hundred forty-three".