243345964 has 6 divisors (see below), whose sum is σ = 425855444. Its totient is φ = 121672980.

The previous prime is 243345961. The next prime is 243345967. The reversal of 243345964 is 469543342.

It is an interprime number because it is at equal distance from previous prime (243345961) and next prime (243345967).

It is not an unprimeable number, because it can be changed into a prime (243345961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30418242 + ... + 30418249.

Almost surely, 2^243345964 is an apocalyptic number.

It is an amenable number.

243345964 is a deficient number, since it is larger than the sum of its proper divisors (182509480).

243345964 is a wasteful number, since it uses less digits than its factorization.

243345964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60836495 (or 60836493 counting only the distinct ones).

The product of its digits is 311040, while the sum is 40.

The square root of 243345964 is about 15599.5501217183. The cubic root of 243345964 is about 624.3211522120.

The spelling of 243345964 in words is "two hundred forty-three million, three hundred forty-five thousand, nine hundred sixty-four".