2009505790 has 8 divisors (see below), whose sum is σ = 3617110440. Its totient is φ = 803802312.

The previous prime is 2009505769. The next prime is 2009505871. The reversal of 2009505790 is 975059002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2009505790² = 8076227040087048200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100475280 + ... + 100475299.

It is an arithmetic number, because the mean of its divisors is an integer number (452138805).

Almost surely, 2^2009505790 is an apocalyptic number.

2009505790 is a deficient number, since it is larger than the sum of its proper divisors (1607604650).

2009505790 is a wasteful number, since it uses less digits than its factorization.

2009505790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200950586.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 2009505790 is about 44827.5115303092. The cubic root of 2009505790 is about 1261.9139866349.

The spelling of 2009505790 in words is "two billion, nine million, five hundred five thousand, seven hundred ninety".