145146609 has 12 divisors (see below), whose sum is σ = 210223156. Its totient is φ = 96502752.

The previous prime is 145146607. The next prime is 145146611. The reversal of 145146609 is 906641541.

145146609 is a `hidden beast` number, since 1 + 4 + 5 + 1 + 46 + 609 = 666.

It is an interprime number because it is at equal distance from previous prime (145146607) and next prime (145146611).

It can be written as a sum of positive squares in 2 ways, for example, as 33315984 + 111830625 = 5772^2 + 10575^2 .

It is not a de Polignac number, because 145146609 - 2¹ = 145146607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145146607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18262 + ... + 24975.

Almost surely, 2^145146609 is an apocalyptic number.

It is an amenable number.

145146609 is a deficient number, since it is larger than the sum of its proper divisors (65076547).

145146609 is a wasteful number, since it uses less digits than its factorization.

145146609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43616 (or 43613 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 145146609 is about 12047.6806481580. The cubic root of 145146609 is about 525.5357904263.

The spelling of 145146609 in words is "one hundred forty-five million, one hundred forty-six thousand, six hundred nine".