243745863 has 8 divisors (see below), whose sum is σ = 326152176. Its totient is φ = 161918400.

The previous prime is 243745829. The next prime is 243745867. The reversal of 243745863 is 368547342.

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

It is not a de Polignac number, because 243745863 - 2²⁴ = 226968647 is a prime.

It is a super-2 number, since 2×243745863² = 118824091459229538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243745867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143728 + ... + 145413.

It is an arithmetic number, because the mean of its divisors is an integer number (40769022).

Almost surely, 2^243745863 is an apocalyptic number.

243745863 is a deficient number, since it is larger than the sum of its proper divisors (82406313).

243745863 is a wasteful number, since it uses less digits than its factorization.

243745863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289425.

The product of its digits is 483840, while the sum is 42.

The square root of 243745863 is about 15612.3625053994. The cubic root of 243745863 is about 624.6629547001.

The spelling of 243745863 in words is "two hundred forty-three million, seven hundred forty-five thousand, eight hundred sixty-three".