1244454545 has 8 divisors (see below), whose sum is σ = 1541518080. Its totient is φ = 963448560.

The previous prime is 1244454539. The next prime is 1244454581. The reversal of 1244454545 is 5454544421.

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

It is not a de Polignac number, because 1244454545 - 2⁶ = 1244454481 is a prime.

It is a super-2 number, since 2×1244454545² = 3097334229142314050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1244454499 and 1244454508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4014215 + ... + 4014524.

It is an arithmetic number, because the mean of its divisors is an integer number (192689760).

Almost surely, 2^1244454545 is an apocalyptic number.

It is an amenable number.

1244454545 is a deficient number, since it is larger than the sum of its proper divisors (297063535).

1244454545 is an equidigital number, since it uses as much as digits as its factorization.

1244454545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8028775.

The product of its digits is 256000, while the sum is 38.

The square root of 1244454545 is about 35276.8273091558. The cubic root of 1244454545 is about 1075.6220074357.

Adding to 1244454545 its reverse (5454544421), we get a palindrome (6698998966).

The spelling of 1244454545 in words is "one billion, two hundred forty-four million, four hundred fifty-four thousand, five hundred forty-five".