243201493 has 4 divisors (see below), whose sum is σ = 243311040. Its totient is φ = 243091948.

The previous prime is 243201457. The next prime is 243201509. The reversal of 243201493 is 394102342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243201493 - 2⁹ = 243200981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243201433) 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, 51373 + ... + 55906.

It is an arithmetic number, because the mean of its divisors is an integer number (60827760).

Almost surely, 2^243201493 is an apocalyptic number.

It is an amenable number.

243201493 is a deficient number, since it is larger than the sum of its proper divisors (109547).

243201493 is a wasteful number, since it uses less digits than its factorization.

243201493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109546.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 243201493 is about 15594.9188199234. The cubic root of 243201493 is about 624.1975775901.

The spelling of 243201493 in words is "two hundred forty-three million, two hundred one thousand, four hundred ninety-three".