243738995 has 8 divisors (see below), whose sum is σ = 292580016. Its totient is φ = 194929056.

The previous prime is 243738991. The next prime is 243739003. The reversal of 243738995 is 599837342.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 243738995 - 2² = 243738991 is a prime.

It is a super-2 number, since 2×243738995² = 118817395367220050, which contains 22 as substring.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 16229 + ... + 27401.

It is an arithmetic number, because the mean of its divisors is an integer number (36572502).

Almost surely, 2^243738995 is an apocalyptic number.

243738995 is a deficient number, since it is larger than the sum of its proper divisors (48841021).

243738995 is a wasteful number, since it uses less digits than its factorization.

243738995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15541.

The product of its digits is 1632960, while the sum is 50.

The square root of 243738995 is about 15612.1425499513. The cubic root of 243738995 is about 624.6570876255.

The spelling of 243738995 in words is "two hundred forty-three million, seven hundred thirty-eight thousand, nine hundred ninety-five".