189478283 has 2 divisors, whose sum is σ = 189478284. Its totient is φ = 189478282.

The previous prime is 189478271. The next prime is 189478313. The reversal of 189478283 is 382874981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189478283 - 2²² = 185283979 is a prime.

It is not a weakly prime, because it can be changed into another prime (189478183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94739141 + 94739142.

It is an arithmetic number, because the mean of its divisors is an integer number (94739142).

Almost surely, 2^189478283 is an apocalyptic number.

189478283 is a deficient number, since it is larger than the sum of its proper divisors (1).

189478283 is an equidigital number, since it uses as much as digits as its factorization.

189478283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 50.

The square root of 189478283 is about 13765.1110783749. Note that the first 3 decimals coincide. The cubic root of 189478283 is about 574.3630330228.

The spelling of 189478283 in words is "one hundred eighty-nine million, four hundred seventy-eight thousand, two hundred eighty-three".