243849664 has 14 divisors (see below), whose sum is σ = 483889304. Its totient is φ = 121924800.

The previous prime is 243849643. The next prime is 243849679. The reversal of 243849664 is 466948342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1905012 + ... + 1905139.

Almost surely, 2^243849664 is an apocalyptic number.

It is an amenable number.

243849664 is a deficient number, since it is larger than the sum of its proper divisors (240039640).

243849664 is an equidigital number, since it uses as much as digits as its factorization.

243849664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810163 (or 3810153 counting only the distinct ones).

The product of its digits is 995328, while the sum is 46.

The square root of 243849664 is about 15615.6864722624. The cubic root of 243849664 is about 624.7516145806.

The spelling of 243849664 in words is "two hundred forty-three million, eight hundred forty-nine thousand, six hundred sixty-four".