2011605634 has 4 divisors (see below), whose sum is σ = 3017408454. Its totient is φ = 1005802816.

The previous prime is 2011605577. The next prime is 2011605643. The reversal of 2011605634 is 4365061102.

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

It can be written as a sum of positive squares in only one way, i.e., 1035230625 + 976375009 = 32175^2 + 31247^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502901407 + ... + 502901410.

Almost surely, 2^2011605634 is an apocalyptic number.

2011605634 is a deficient number, since it is larger than the sum of its proper divisors (1005802820).

2011605634 is a wasteful number, since it uses less digits than its factorization.

2011605634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005802819.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2011605634 is about 44850.9267908702. The cubic root of 2011605634 is about 1262.3533815813.

Adding to 2011605634 its reverse (4365061102), we get a palindrome (6376666736).

The spelling of 2011605634 in words is "two billion, eleven million, six hundred five thousand, six hundred thirty-four".