219423164 has 12 divisors (see below), whose sum is σ = 397231800. Its totient is φ = 105928368.

The previous prime is 219423133. The next prime is 219423167. The reversal of 219423164 is 461324912.

It is a self number, because there is not a number n which added to its sum of digits gives 219423164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219423167) 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, 945674 + ... + 945905.

It is an arithmetic number, because the mean of its divisors is an integer number (33102650).

Almost surely, 2^219423164 is an apocalyptic number.

It is an amenable number.

219423164 is a deficient number, since it is larger than the sum of its proper divisors (177808636).

219423164 is a wasteful number, since it uses less digits than its factorization.

219423164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891612 (or 1891610 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 219423164 is about 14812.9390736612. The cubic root of 219423164 is about 603.1529982761.

The spelling of 219423164 in words is "two hundred nineteen million, four hundred twenty-three thousand, one hundred sixty-four".