189498323 has 4 divisors (see below), whose sum is σ = 216569520. Its totient is φ = 162427128.

The previous prime is 189498307. The next prime is 189498329. The reversal of 189498323 is 323894981.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323894981 = 101 ⋅3206881.

It is a cyclic number.

It is not a de Polignac number, because 189498323 - 2⁴ = 189498307 is a prime.

It is a super-2 number, since 2×189498323² = 71819228839624658, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189498329) 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, 13535588 + ... + 13535601.

It is an arithmetic number, because the mean of its divisors is an integer number (54142380).

Almost surely, 2^189498323 is an apocalyptic number.

189498323 is a deficient number, since it is larger than the sum of its proper divisors (27071197).

189498323 is an equidigital number, since it uses as much as digits as its factorization.

189498323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27071196.

The product of its digits is 373248, while the sum is 47.

The square root of 189498323 is about 13765.8389864185. The cubic root of 189498323 is about 574.3832813053.

It can be divided in two parts, 18949 and 8323, that added together give a palindrome (27272).

The spelling of 189498323 in words is "one hundred eighty-nine million, four hundred ninety-eight thousand, three hundred twenty-three".