19055189 has 4 divisors (see below), whose sum is σ = 19172256. Its totient is φ = 18938124.

The previous prime is 19055177. The next prime is 19055191. The reversal of 19055189 is 98155091.

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 not a de Polignac number, because 19055189 - 2²⁰ = 18006613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19055089) 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, 58289 + ... + 58614.

It is an arithmetic number, because the mean of its divisors is an integer number (4793064).

Almost surely, 2^19055189 is an apocalyptic number.

It is an amenable number.

19055189 is a deficient number, since it is larger than the sum of its proper divisors (117067).

19055189 is a wasteful number, since it uses less digits than its factorization.

19055189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117066.

The product of its (nonzero) digits is 16200, while the sum is 38.

The square root of 19055189 is about 4365.2249655659. The cubic root of 19055189 is about 267.0982772595.

It can be divided in two parts, 190 and 55189, that multiplied together give a triangular number (10485910 = T₄₅₇₉).

The spelling of 19055189 in words is "nineteen million, fifty-five thousand, one hundred eighty-nine".