2009011684 has 27 divisors (see below), whose sum is σ = 3576240297. Its totient is φ = 987518304.

The previous prime is 2009011661. The next prime is 2009011709. The reversal of 2009011684 is 4861109002.

It is a happy number.

The square root of 2009011684 is 44822.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1140412900 + 868598784 = 33770^2 + 29472^2 .

It is a super-2 number, since 2×2009011684² = 8072255892897031712, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6543859 + ... + 6544165.

Almost surely, 2^2009011684 is an apocalyptic number.

2009011684 is the 44822-nd square number.

It is an amenable number.

2009011684 is a deficient number, since it is larger than the sum of its proper divisors (1567228613).

2009011684 is an frugal number, since it uses more digits than its factorization.

2009011684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The cubic root of 2009011684 is about 1261.8105498618.

The spelling of 2009011684 in words is "two billion, nine million, eleven thousand, six hundred eighty-four".