243649654 has 32 divisors (see below), whose sum is σ = 395498880. Its totient is φ = 112223232.

The previous prime is 243649643. The next prime is 243649657. The reversal of 243649654 is 456946342.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 243649654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243649657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210742 + ... + 211894.

It is an arithmetic number, because the mean of its divisors is an integer number (12359340).

Almost surely, 2^243649654 is an apocalyptic number.

243649654 is a deficient number, since it is larger than the sum of its proper divisors (151849226).

243649654 is a wasteful number, since it uses less digits than its factorization.

243649654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324.

The product of its digits is 622080, while the sum is 43.

The square root of 243649654 is about 15609.2810212386. The cubic root of 243649654 is about 624.5807569193.

The spelling of 243649654 in words is "two hundred forty-three million, six hundred forty-nine thousand, six hundred fifty-four".