1244214661 has 8 divisors (see below), whose sum is σ = 1250078400. Its totient is φ = 1238364960.

The previous prime is 1244214619. The next prime is 1244214689. The reversal of 1244214661 is 1664124421.

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

It is a cyclic number.

It is not a de Polignac number, because 1244214661 - 2⁹ = 1244214149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244214161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201226 + ... + 207316.

It is an arithmetic number, because the mean of its divisors is an integer number (156259800).

Almost surely, 2^1244214661 is an apocalyptic number.

It is an amenable number.

1244214661 is a deficient number, since it is larger than the sum of its proper divisors (5863739).

1244214661 is an equidigital number, since it uses as much as digits as its factorization.

1244214661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7019.

The product of its digits is 9216, while the sum is 31.

The square root of 1244214661 is about 35273.4271229774. The cubic root of 1244214661 is about 1075.5528898474.

The spelling of 1244214661 in words is "one billion, two hundred forty-four million, two hundred fourteen thousand, six hundred sixty-one".