243791741 has 4 divisors (see below), whose sum is σ = 244698300. Its totient is φ = 242885184.

The previous prime is 243791731. The next prime is 243791753. The reversal of 243791741 is 147197342.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32205625 + 211586116 = 5675^2 + 14546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243791741 is a prime.

It is a super-2 number, since 2×243791741² = 118868825959622162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243791695 and 243791704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243791731) 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, 452876 + ... + 453413.

It is an arithmetic number, because the mean of its divisors is an integer number (61174575).

Almost surely, 2^243791741 is an apocalyptic number.

It is an amenable number.

243791741 is a deficient number, since it is larger than the sum of its proper divisors (906559).

243791741 is an equidigital number, since it uses as much as digits as its factorization.

243791741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906558.

The product of its digits is 42336, while the sum is 38.

The square root of 243791741 is about 15613.8317206251. The cubic root of 243791741 is about 624.7021437265.

The spelling of 243791741 in words is "two hundred forty-three million, seven hundred ninety-one thousand, seven hundred forty-one".