2009243090 has 16 divisors (see below), whose sum is σ = 3829381272. Its totient is φ = 756420864.

The previous prime is 2009243081. The next prime is 2009243123. The reversal of 2009243090 is 903429002.

It can be written as a sum of positive squares in 4 ways, for example, as 1763412049 + 245831041 = 41993^2 + 15679^2 .

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, 5909369 + ... + 5909708.

Almost surely, 2^2009243090 is an apocalyptic number.

2009243090 is a deficient number, since it is larger than the sum of its proper divisors (1820138182).

2009243090 is a wasteful number, since it uses less digits than its factorization.

2009243090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11819101.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 2009243090 is about 44824.5813142744. The cubic root of 2009243090 is about 1261.8589947969.

The spelling of 2009243090 in words is "two billion, nine million, two hundred forty-three thousand, ninety".