189768146 has 4 divisors (see below), whose sum is σ = 284652222. Its totient is φ = 94884072.

The previous prime is 189768121. The next prime is 189768167. The reversal of 189768146 is 641867981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641867981 = 3121 ⋅205661.

It can be written as a sum of positive squares in only one way, i.e., 153636025 + 36132121 = 12395^2 + 6011^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 189768094 and 189768103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47442035 + ... + 47442038.

Almost surely, 2^189768146 is an apocalyptic number.

189768146 is a deficient number, since it is larger than the sum of its proper divisors (94884076).

189768146 is an equidigital number, since it uses as much as digits as its factorization.

189768146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94884075.

The product of its digits is 580608, while the sum is 50.

The square root of 189768146 is about 13775.6359562817. The cubic root of 189768146 is about 574.6557697672.

The spelling of 189768146 in words is "one hundred eighty-nine million, seven hundred sixty-eight thousand, one hundred forty-six".