609449154 has 16 divisors (see below), whose sum is σ = 1220881248. Its totient is φ = 202819232.

The previous prime is 609449153. The next prime is 609449179. The reversal of 609449154 is 451944906.

It is a super-2 number, since 2×609449154² = 742856542622631432, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (609449153) 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 7 ways as a sum of consecutive naturals, for example, 78612 + ... + 86015.

It is an arithmetic number, because the mean of its divisors is an integer number (76305078).

Almost surely, 2^609449154 is an apocalyptic number.

609449154 is an abundant number, since it is smaller than the sum of its proper divisors (611432094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

609449154 is a wasteful number, since it uses less digits than its factorization.

609449154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165249.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 609449154 is about 24687.0240004744. The cubic root of 609449154 is about 847.8372486775.

The spelling of 609449154 in words is "six hundred nine million, four hundred forty-nine thousand, one hundred fifty-four".