1244280673 has 4 divisors (see below), whose sum is σ = 1252631700. Its totient is φ = 1235929648.

The previous prime is 1244280649. The next prime is 1244280689. The reversal of 1244280673 is 3760824421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 690007824 + 554272849 = 26268^2 + 23543^2 .

It is a cyclic number.

It is not a de Polignac number, because 1244280673 - 2⁹ = 1244280161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244280613) 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, 4175290 + ... + 4175587.

It is an arithmetic number, because the mean of its divisors is an integer number (313157925).

Almost surely, 2^1244280673 is an apocalyptic number.

It is an amenable number.

1244280673 is a deficient number, since it is larger than the sum of its proper divisors (8351027).

1244280673 is an equidigital number, since it uses as much as digits as its factorization.

1244280673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8351026.

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 1244280673 is about 35274.3628291143. The cubic root of 1244280673 is about 1075.5719107190.

The spelling of 1244280673 in words is "one billion, two hundred forty-four million, two hundred eighty thousand, six hundred seventy-three".