189228419 has 4 divisors (see below), whose sum is σ = 191893680. Its totient is φ = 186563160.

The previous prime is 189228379. The next prime is 189228437. The reversal of 189228419 is 914822981.

189228419 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 an emirpimes, since its reverse is a distinct semiprime: 914822981 = 1051 ⋅870431.

It is a cyclic number.

It is not a de Polignac number, because 189228419 - 2¹² = 189224323 is a prime.

It is a super-2 number, since 2×189228419² = 71614789114479122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189228419.

It is not an unprimeable number, because it can be changed into a prime (189228499) 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, 1332524 + ... + 1332665.

It is an arithmetic number, because the mean of its divisors is an integer number (47973420).

Almost surely, 2^189228419 is an apocalyptic number.

189228419 is a deficient number, since it is larger than the sum of its proper divisors (2665261).

189228419 is an equidigital number, since it uses as much as digits as its factorization.

189228419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665260.

The product of its digits is 82944, while the sum is 44.

The square root of 189228419 is about 13756.0320950483. The cubic root of 189228419 is about 574.1104521430.

The spelling of 189228419 in words is "one hundred eighty-nine million, two hundred twenty-eight thousand, four hundred nineteen".