243011738 has 8 divisors (see below), whose sum is σ = 365495988. Its totient is φ = 121179744.

The previous prime is 243011723. The next prime is 243011773. The reversal of 243011738 is 837110342.

It can be written as a sum of positive squares in 2 ways, for example, as 222099409 + 20912329 = 14903^2 + 4573^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 243011738.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162131 + ... + 163622.

Almost surely, 2^243011738 is an apocalyptic number.

243011738 is a deficient number, since it is larger than the sum of its proper divisors (122484250).

243011738 is a wasteful number, since it uses less digits than its factorization.

243011738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326128.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 243011738 is about 15588.8337600989. The cubic root of 243011738 is about 624.0351945003.

The spelling of 243011738 in words is "two hundred forty-three million, eleven thousand, seven hundred thirty-eight".