219950189 has 4 divisors (see below), whose sum is σ = 221267424. Its totient is φ = 218632956.

The previous prime is 219950167. The next prime is 219950191. The reversal of 219950189 is 981059912.

It is a happy number.

219950189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-219950189 is a prime.

It is a super-2 number, since 2×219950189² = 96756171282271442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219950789) 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, 658367 + ... + 658700.

It is an arithmetic number, because the mean of its divisors is an integer number (55316856).

Almost surely, 2^219950189 is an apocalyptic number.

It is an amenable number.

219950189 is a deficient number, since it is larger than the sum of its proper divisors (1317235).

219950189 is a wasteful number, since it uses less digits than its factorization.

219950189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317234.

The product of its (nonzero) digits is 58320, while the sum is 44.

The square root of 219950189 is about 14830.7177506687. The cubic root of 219950189 is about 603.6355096985.

The spelling of 219950189 in words is "two hundred nineteen million, nine hundred fifty thousand, one hundred eighty-nine".