219040243 has 8 divisors (see below), whose sum is σ = 220587440. Its totient is φ = 217499040.

The previous prime is 219040181. The next prime is 219040249. The reversal of 219040243 is 342040912.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-219040243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219040249) 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, 90493 + ... + 92881.

It is an arithmetic number, because the mean of its divisors is an integer number (27573430).

Almost surely, 2^219040243 is an apocalyptic number.

219040243 is a deficient number, since it is larger than the sum of its proper divisors (1547197).

219040243 is a wasteful number, since it uses less digits than its factorization.

219040243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 219040243 is about 14800.0082094572. The cubic root of 219040243 is about 602.8019347165.

The spelling of 219040243 in words is "two hundred nineteen million, forty thousand, two hundred forty-three".