189424519 has 4 divisors (see below), whose sum is σ = 191263696. Its totient is φ = 187585344.

The previous prime is 189424513. The next prime is 189424531. The reversal of 189424519 is 915424981.

189424519 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.

It is a cyclic number.

It is not a de Polignac number, because 189424519 - 2²¹ = 187327367 is a prime.

It is a super-2 number, since 2×189424519² = 71763296796762722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189424513) 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, 919434 + ... + 919639.

It is an arithmetic number, because the mean of its divisors is an integer number (47815924).

Almost surely, 2^189424519 is an apocalyptic number.

189424519 is a deficient number, since it is larger than the sum of its proper divisors (1839177).

189424519 is a wasteful number, since it uses less digits than its factorization.

189424519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839176.

The product of its digits is 103680, while the sum is 43.

The square root of 189424519 is about 13763.1580314984. The cubic root of 189424519 is about 574.3087031812.

The spelling of 189424519 in words is "one hundred eighty-nine million, four hundred twenty-four thousand, five hundred nineteen".