2009579158 has 4 divisors (see below), whose sum is σ = 3014368740. Its totient is φ = 1004789578.

The previous prime is 2009579153. The next prime is 2009579171. The reversal of 2009579158 is 8519759002.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009579153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502394788 + ... + 502394791.

It is an arithmetic number, because the mean of its divisors is an integer number (753592185).

Almost surely, 2^2009579158 is an apocalyptic number.

2009579158 is a deficient number, since it is larger than the sum of its proper divisors (1004789582).

2009579158 is a wasteful number, since it uses less digits than its factorization.

2009579158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004789581.

The product of its (nonzero) digits is 226800, while the sum is 46.

The square root of 2009579158 is about 44828.3298595877. The cubic root of 2009579158 is about 1261.9293441388.

The spelling of 2009579158 in words is "two billion, nine million, five hundred seventy-nine thousand, one hundred fifty-eight".