219140643 has 8 divisors (see below), whose sum is σ = 301613056. Its totient is φ = 141381000.

The previous prime is 219140641. The next prime is 219140651. The reversal of 219140643 is 346041912.

219140643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 219140643 - 2¹ = 219140641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 219140643.

It is not an unprimeable number, because it can be changed into a prime (219140641) 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, 1178083 + ... + 1178268.

It is an arithmetic number, because the mean of its divisors is an integer number (37701632).

Almost surely, 2^219140643 is an apocalyptic number.

219140643 is a deficient number, since it is larger than the sum of its proper divisors (82472413).

219140643 is a wasteful number, since it uses less digits than its factorization.

219140643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356385.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 219140643 is about 14803.3997108772. The cubic root of 219140643 is about 602.8940214016.

The spelling of 219140643 in words is "two hundred nineteen million, one hundred forty thousand, six hundred forty-three".