189468519 has 8 divisors (see below), whose sum is σ = 267485040. Its totient is φ = 118882176.

The previous prime is 189468511. The next prime is 189468523. The reversal of 189468519 is 915864981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189468519 - 2³ = 189468511 is a prime.

It is a super-2 number, since 2×189468519² = 71796639384106722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 3715069 = 189468519 / (1 + 8 + 9 + 4 + 6 + 8 + 5 + 1 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189468511) 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, 1857484 + ... + 1857585.

It is an arithmetic number, because the mean of its divisors is an integer number (33435630).

Almost surely, 2^189468519 is an apocalyptic number.

189468519 is a deficient number, since it is larger than the sum of its proper divisors (78016521).

189468519 is a wasteful number, since it uses less digits than its factorization.

189468519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3715089.

The product of its digits is 622080, while the sum is 51.

The square root of 189468519 is about 13764.7564090325. The cubic root of 189468519 is about 574.3531670250.

The spelling of 189468519 in words is "one hundred eighty-nine million, four hundred sixty-eight thousand, five hundred nineteen".