1244305641 has 4 divisors (see below), whose sum is σ = 1659074192. Its totient is φ = 829537092.

The previous prime is 1244305637. The next prime is 1244305703. The reversal of 1244305641 is 1465034421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1244305641 - 2² = 1244305637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1244305599 and 1244305608.

It is not an unprimeable number, because it can be changed into a prime (1244305241) 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, 207384271 + ... + 207384276.

It is an arithmetic number, because the mean of its divisors is an integer number (414768548).

Almost surely, 2^1244305641 is an apocalyptic number.

It is an amenable number.

1244305641 is a deficient number, since it is larger than the sum of its proper divisors (414768551).

1244305641 is an equidigital number, since it uses as much as digits as its factorization.

1244305641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414768550.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1244305641 is about 35274.7167387635. The cubic root of 1244305641 is about 1075.5791048889.

The spelling of 1244305641 in words is "one billion, two hundred forty-four million, three hundred five thousand, six hundred forty-one".