243968953 has 8 divisors (see below), whose sum is σ = 248421600. Its totient is φ = 239527008.

The previous prime is 243968947. The next prime is 243968969. The reversal of 243968953 is 359869342.

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

It is a cyclic number.

It is not a de Polignac number, because 243968953 - 2⁹ = 243968441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243968897 and 243968906.

It is not an unprimeable number, because it can be changed into a prime (243968903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54058 + ... + 58396.

It is an arithmetic number, because the mean of its divisors is an integer number (31052700).

Almost surely, 2^243968953 is an apocalyptic number.

It is an amenable number.

243968953 is a deficient number, since it is larger than the sum of its proper divisors (4452647).

243968953 is an equidigital number, since it uses as much as digits as its factorization.

243968953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5351.

The product of its digits is 1399680, while the sum is 49.

The square root of 243968953 is about 15619.5055299456. The cubic root of 243968953 is about 624.8534722101.

It can be divided in two parts, 243968 and 953, that multiplied together give a square (232501504 = 15248²).

The spelling of 243968953 in words is "two hundred forty-three million, nine hundred sixty-eight thousand, nine hundred fifty-three".