243790965 has 192 divisors, whose sum is σ = 537788160. Its totient is φ = 104509440.

The previous prime is 243790949. The next prime is 243790979. The reversal of 243790965 is 569097342.

It is a happy number.

It is not a de Polignac number, because 243790965 - 2⁴ = 243790949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 243790965.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 6588927 + ... + 6588963.

It is an arithmetic number, because the mean of its divisors is an integer number (2800980).

Almost surely, 2^243790965 is an apocalyptic number.

It is an amenable number.

243790965 is an abundant number, since it is smaller than the sum of its proper divisors (293997195).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243790965 is a wasteful number, since it uses less digits than its factorization.

243790965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 243790965 is about 15613.8068708435. The cubic root of 243790965 is about 624.7014809075.

The spelling of 243790965 in words is "two hundred forty-three million, seven hundred ninety thousand, nine hundred sixty-five".