2009243580 has 24 divisors (see below), whose sum is σ = 5625882192. Its totient is φ = 535798272.

The previous prime is 2009243513. The next prime is 2009243609. The reversal of 2009243580 is 853429002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16743637 + ... + 16743756.

It is an arithmetic number, because the mean of its divisors is an integer number (234411758).

Almost surely, 2^2009243580 is an apocalyptic number.

2009243580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2009243580 is an abundant number, since it is smaller than the sum of its proper divisors (3616638612).

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

2009243580 is a wasteful number, since it uses less digits than its factorization.

2009243580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33487405 (or 33487403 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 2009243580 is about 44824.5867800251. The cubic root of 2009243580 is about 1261.8590973746.

The spelling of 2009243580 in words is "two billion, nine million, two hundred forty-three thousand, five hundred eighty".