189073147 has 2 divisors, whose sum is σ = 189073148. Its totient is φ = 189073146.

The previous prime is 189073121. The next prime is 189073153. The reversal of 189073147 is 741370981.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189073147 is a prime.

It is not a weakly prime, because it can be changed into another prime (189073117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94536573 + 94536574.

It is an arithmetic number, because the mean of its divisors is an integer number (94536574).

Almost surely, 2^189073147 is an apocalyptic number.

189073147 is a deficient number, since it is larger than the sum of its proper divisors (1).

189073147 is an equidigital number, since it uses as much as digits as its factorization.

189073147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 189073147 is about 13750.3871581858. The cubic root of 189073147 is about 573.9533797681.

The spelling of 189073147 in words is "one hundred eighty-nine million, seventy-three thousand, one hundred forty-seven".