146518209 has 24 divisors (see below), whose sum is σ = 215382440. Its totient is φ = 95966208.

The previous prime is 146518193. The next prime is 146518241. The reversal of 146518209 is 902815641.

It can be written as a sum of positive squares in 4 ways, for example, as 8573184 + 137945025 = 2928^2 + 11745^2 .

It is not a de Polignac number, because 146518209 - 2⁴ = 146518193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146518609) 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 23 ways as a sum of consecutive naturals, for example, 136527 + ... + 137595.

Almost surely, 2^146518209 is an apocalyptic number.

It is an amenable number.

146518209 is a deficient number, since it is larger than the sum of its proper divisors (68864231).

146518209 is a wasteful number, since it uses less digits than its factorization.

146518209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329 (or 1326 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 146518209 is about 12104.4706203948. The cubic root of 146518209 is about 527.1859982193.

The spelling of 146518209 in words is "one hundred forty-six million, five hundred eighteen thousand, two hundred nine".