2013238666 has 4 divisors (see below), whose sum is σ = 3019858002. Its totient is φ = 1006619332.

The previous prime is 2013238649. The next prime is 2013238699. The reversal of 2013238666 is 6668323102.

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., 1423477441 + 589761225 = 37729^2 + 24285^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503309665 + ... + 503309668.

Almost surely, 2^2013238666 is an apocalyptic number.

2013238666 is a deficient number, since it is larger than the sum of its proper divisors (1006619336).

2013238666 is a wasteful number, since it uses less digits than its factorization.

2013238666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006619335.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 2013238666 is about 44869.1282063737. The cubic root of 2013238666 is about 1262.6948842179.

The spelling of 2013238666 in words is "two billion, thirteen million, two hundred thirty-eight thousand, six hundred sixty-six".