1244644746 has 8 divisors (see below), whose sum is σ = 2489289504. Its totient is φ = 414881580.

The previous prime is 1244644727. The next prime is 1244644757. The reversal of 1244644746 is 6474464421.

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

1244644746 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1244644698 and 1244644707.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103720390 + ... + 103720401.

It is an arithmetic number, because the mean of its divisors is an integer number (311161188).

Almost surely, 2^1244644746 is an apocalyptic number.

1244644746 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1244644746 is a wasteful number, since it uses less digits than its factorization.

1244644746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207440796.

The product of its digits is 516096, while the sum is 42.

The square root of 1244644746 is about 35279.5230409936. The cubic root of 1244644746 is about 1075.6768035872.

The spelling of 1244644746 in words is "one billion, two hundred forty-four million, six hundred forty-four thousand, seven hundred forty-six".