243478965 has 16 divisors (see below), whose sum is σ = 389760768. Its totient is φ = 129790656.

The previous prime is 243478903. The next prime is 243478987. The reversal of 243478965 is 569874342.

243478965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243478965 - 2⁹ = 243478453 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52324 + ... + 56786.

It is an arithmetic number, because the mean of its divisors is an integer number (24360048).

Almost surely, 2^243478965 is an apocalyptic number.

It is an amenable number.

243478965 is a deficient number, since it is larger than the sum of its proper divisors (146281803).

243478965 is a wasteful number, since it uses less digits than its factorization.

243478965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8108.

The product of its digits is 1451520, while the sum is 48.

The square root of 243478965 is about 15603.8125148952. The cubic root of 243478965 is about 624.4348726304.

The spelling of 243478965 in words is "two hundred forty-three million, four hundred seventy-eight thousand, nine hundred sixty-five".