243863894 has 16 divisors (see below), whose sum is σ = 385486560. Its totient is φ = 115473600.

The previous prime is 243863891. The next prime is 243863897. The reversal of 243863894 is 498368342.

It is an interprime number because it is at equal distance from previous prime (243863891) and next prime (243863897).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243863891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21599 + ... + 30890.

It is an arithmetic number, because the mean of its divisors is an integer number (24092910).

Almost surely, 2^243863894 is an apocalyptic number.

243863894 is a deficient number, since it is larger than the sum of its proper divisors (141622666).

243863894 is a wasteful number, since it uses less digits than its factorization.

243863894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52615.

The product of its digits is 995328, while the sum is 47.

The square root of 243863894 is about 15616.1420972019. The cubic root of 243863894 is about 624.7637669349.

The spelling of 243863894 in words is "two hundred forty-three million, eight hundred sixty-three thousand, eight hundred ninety-four".