189489519 has 24 divisors (see below), whose sum is σ = 280874880. Its totient is φ = 123035472.

The previous prime is 189489511. The next prime is 189489539. The reversal of 189489519 is 915984981.

189489519 is a `hidden beast` number, since 1 + 89 + 48 + 9 + 519 = 666.

It is not a de Polignac number, because 189489519 - 2³ = 189489511 is a prime.

It is a super-2 number, since 2×189489519² = 71812555621702722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189489511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254662 + ... + 255404.

It is an arithmetic number, because the mean of its divisors is an integer number (11703120).

Almost surely, 2^189489519 is an apocalyptic number.

189489519 is a deficient number, since it is larger than the sum of its proper divisors (91385361).

189489519 is a wasteful number, since it uses less digits than its factorization.

189489519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451 (or 1448 counting only the distinct ones).

The product of its digits is 933120, while the sum is 54.

The square root of 189489519 is about 13765.5192056094. The cubic root of 189489519 is about 574.3743859782.

The spelling of 189489519 in words is "one hundred eighty-nine million, four hundred eighty-nine thousand, five hundred nineteen".