1244011666 has 8 divisors (see below), whose sum is σ = 1930363020. Its totient is φ = 600557328.

The previous prime is 1244011619. The next prime is 1244011667. The reversal of 1244011666 is 6661104421.

It can be written as a sum of positive squares in 2 ways, for example, as 1223950225 + 20061441 = 34985^2 + 4479^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1244011667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10724181 + ... + 10724296.

Almost surely, 2^1244011666 is an apocalyptic number.

1244011666 is a deficient number, since it is larger than the sum of its proper divisors (686351354).

1244011666 is a wasteful number, since it uses less digits than its factorization.

1244011666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21448508.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1244011666 is about 35270.5495562516. The cubic root of 1244011666 is about 1075.4943941177.

The spelling of 1244011666 in words is "one billion, two hundred forty-four million, eleven thousand, six hundred sixty-six".