146744189 has 2 divisors, whose sum is σ = 146744190. Its totient is φ = 146744188.

The previous prime is 146744167. The next prime is 146744197. The reversal of 146744189 is 981447641.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116856100 + 29888089 = 10810^2 + 5467^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146744189 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146747189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73372094 + 73372095.

It is an arithmetic number, because the mean of its divisors is an integer number (73372095).

Almost surely, 2^146744189 is an apocalyptic number.

It is an amenable number.

146744189 is a deficient number, since it is larger than the sum of its proper divisors (1).

146744189 is an equidigital number, since it uses as much as digits as its factorization.

146744189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 44.

The square root of 146744189 is about 12113.8015915731. The cubic root of 146744189 is about 527.4568912758.

The spelling of 146744189 in words is "one hundred forty-six million, seven hundred forty-four thousand, one hundred eighty-nine".