189297619 has 8 divisors (see below), whose sum is σ = 216458240. Its totient is φ = 162166536.

The previous prime is 189297611. The next prime is 189297637. The reversal of 189297619 is 916792981.

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

It is not a de Polignac number, because 189297619 - 2³ = 189297611 is a prime.

It is a super-2 number, since 2×189297619² = 71667177118138322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189297611) 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, 8692 + ... + 21310.

It is an arithmetic number, because the mean of its divisors is an integer number (27057280).

Almost surely, 2^189297619 is an apocalyptic number.

189297619 is a deficient number, since it is larger than the sum of its proper divisors (27160621).

189297619 is a wasteful number, since it uses less digits than its factorization.

189297619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14769.

The product of its digits is 489888, while the sum is 52.

The square root of 189297619 is about 13758.5471253327. The cubic root of 189297619 is about 574.1804268358.

The spelling of 189297619 in words is "one hundred eighty-nine million, two hundred ninety-seven thousand, six hundred nineteen".