146161489 has 2 divisors, whose sum is σ = 146161490. Its totient is φ = 146161488.

The previous prime is 146161459. The next prime is 146161501. The reversal of 146161489 is 984161641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137358400 + 8803089 = 11720^2 + 2967^2 .

It is an emirp because it is prime and its reverse (984161641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146161489 - 2¹⁹ = 145637201 is a prime.

It is not a weakly prime, because it can be changed into another prime (146161459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73080744 + 73080745.

It is an arithmetic number, because the mean of its divisors is an integer number (73080745).

Almost surely, 2^146161489 is an apocalyptic number.

It is an amenable number.

146161489 is a deficient number, since it is larger than the sum of its proper divisors (1).

146161489 is an equidigital number, since it uses as much as digits as its factorization.

146161489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 40.

The square root of 146161489 is about 12089.7265891334. The cubic root of 146161489 is about 526.7578134101.

The spelling of 146161489 in words is "one hundred forty-six million, one hundred sixty-one thousand, four hundred eighty-nine".