219389468 has 6 divisors (see below), whose sum is σ = 383931576. Its totient is φ = 109694732.

The previous prime is 219389461. The next prime is 219389477. The reversal of 219389468 is 864983912.

It is a happy number.

219389468 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219389461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27423680 + ... + 27423687.

It is an arithmetic number, because the mean of its divisors is an integer number (63988596).

Almost surely, 2^219389468 is an apocalyptic number.

It is an amenable number.

219389468 is a deficient number, since it is larger than the sum of its proper divisors (164542108).

219389468 is a wasteful number, since it uses less digits than its factorization.

219389468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54847371 (or 54847369 counting only the distinct ones).

The product of its digits is 746496, while the sum is 50.

The square root of 219389468 is about 14811.8016459849. The cubic root of 219389468 is about 603.1221220406.

The spelling of 219389468 in words is "two hundred nineteen million, three hundred eighty-nine thousand, four hundred sixty-eight".