243738994 has 8 divisors (see below), whose sum is σ = 369158400. Its totient is φ = 120686196.

The previous prime is 243738991. The next prime is 243739003. The reversal of 243738994 is 499837342.

It is a happy number.

243738994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×243738994² = 118817394392264072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243738991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 591394 + ... + 591805.

It is an arithmetic number, because the mean of its divisors is an integer number (46144800).

Almost surely, 2^243738994 is an apocalyptic number.

243738994 is a deficient number, since it is larger than the sum of its proper divisors (125419406).

243738994 is a wasteful number, since it uses less digits than its factorization.

243738994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183304.

The product of its digits is 1306368, while the sum is 49.

The square root of 243738994 is about 15612.1425179250. The cubic root of 243738994 is about 624.6570867712.

The spelling of 243738994 in words is "two hundred forty-three million, seven hundred thirty-eight thousand, nine hundred ninety-four".