19189164 has 24 divisors (see below), whose sum is σ = 47131840. Its totient is φ = 6059664.

The previous prime is 19189151. The next prime is 19189169. The reversal of 19189164 is 46198191.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (19189169) 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, 41854 + ... + 42309.

Almost surely, 2^19189164 is an apocalyptic number.

It is an amenable number.

19189164 is an abundant number, since it is smaller than the sum of its proper divisors (27942676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19189164 is a wasteful number, since it uses less digits than its factorization.

19189164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84189 (or 84187 counting only the distinct ones).

The product of its digits is 15552, while the sum is 39.

The square root of 19189164 is about 4380.5438018584. The cubic root of 19189164 is about 267.7227957236.

The spelling of 19189164 in words is "nineteen million, one hundred eighty-nine thousand, one hundred sixty-four".