209043148 has 12 divisors (see below), whose sum is σ = 369597592. Its totient is φ = 103443840.

The previous prime is 209043139. The next prime is 209043151. The reversal of 209043148 is 841340902.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 268998 + ... + 269773.

Almost surely, 2^209043148 is an apocalyptic number.

It is an amenable number.

209043148 is a deficient number, since it is larger than the sum of its proper divisors (160554444).

209043148 is a wasteful number, since it uses less digits than its factorization.

209043148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538872 (or 538870 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 209043148 is about 14458.3245225718. The cubic root of 209043148 is about 593.4880502417.

The spelling of 209043148 in words is "two hundred nine million, forty-three thousand, one hundred forty-eight".