243200493 has 6 divisors (see below), whose sum is σ = 351289614. Its totient is φ = 162133656.

The previous prime is 243200443. The next prime is 243200497. The reversal of 243200493 is 394002342.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 199996164 + 43204329 = 14142^2 + 6573^2 .

It is not a de Polignac number, because 243200493 - 2²⁵ = 209646061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243200497) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13511130 + ... + 13511147.

It is an arithmetic number, because the mean of its divisors is an integer number (58548269).

Almost surely, 2^243200493 is an apocalyptic number.

It is an amenable number.

243200493 is a deficient number, since it is larger than the sum of its proper divisors (108089121).

243200493 is a wasteful number, since it uses less digits than its factorization.

243200493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27022283 (or 27022280 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 243200493 is about 15594.8867581653. The cubic root of 243200493 is about 624.1967220602.

The spelling of 243200493 in words is "two hundred forty-three million, two hundred thousand, four hundred ninety-three".