189482081 has 2 divisors, whose sum is σ = 189482082. Its totient is φ = 189482080.

The previous prime is 189482021. The next prime is 189482093. The reversal of 189482081 is 180284981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160149025 + 29333056 = 12655^2 + 5416^2 .

It is an emirp because it is prime and its reverse (180284981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189482081 - 2²⁶ = 122373217 is a prime.

It is a super-2 number, since 2×189482081² = 71806918040181122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (189482011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94741040 + 94741041.

It is an arithmetic number, because the mean of its divisors is an integer number (94741041).

Almost surely, 2^189482081 is an apocalyptic number.

It is an amenable number.

189482081 is a deficient number, since it is larger than the sum of its proper divisors (1).

189482081 is an equidigital number, since it uses as much as digits as its factorization.

189482081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 41.

The square root of 189482081 is about 13765.2490351610. The cubic root of 189482081 is about 574.3668706063.

The spelling of 189482081 in words is "one hundred eighty-nine million, four hundred eighty-two thousand, eighty-one".