243740363 has 2 divisors, whose sum is σ = 243740364. Its totient is φ = 243740362.

The previous prime is 243740351. The next prime is 243740429. The reversal of 243740363 is 363047342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243740363 - 2¹⁴ = 243723979 is a prime.

It is not a weakly prime, because it can be changed into another prime (243740663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121870181 + 121870182.

It is an arithmetic number, because the mean of its divisors is an integer number (121870182).

Almost surely, 2^243740363 is an apocalyptic number.

243740363 is a deficient number, since it is larger than the sum of its proper divisors (1).

243740363 is an equidigital number, since it uses as much as digits as its factorization.

243740363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 32.

The square root of 243740363 is about 15612.1863619418. The cubic root of 243740363 is about 624.6582562653.

The spelling of 243740363 in words is "two hundred forty-three million, seven hundred forty thousand, three hundred sixty-three".