1344015561 has 12 divisors (see below), whose sum is σ = 2084595792. Its totient is φ = 768008808.

The previous prime is 1344015503. The next prime is 1344015581. The reversal of 1344015561 is 1655104431.

It is a happy number.

It is not a de Polignac number, because 1344015561 - 2¹⁰ = 1344014537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1344015581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4571335 + ... + 4571628.

It is an arithmetic number, because the mean of its divisors is an integer number (173716316).

Almost surely, 2^1344015561 is an apocalyptic number.

It is an amenable number.

1344015561 is a deficient number, since it is larger than the sum of its proper divisors (740580231).

1344015561 is an equidigital number, since it uses as much as digits as its factorization.

1344015561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9142980 (or 9142973 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1344015561 is about 36660.8177895693. The cubic root of 1344015561 is about 1103.5739296252.

Adding to 1344015561 its reverse (1655104431), we get a palindrome (2999119992).

The spelling of 1344015561 in words is "one billion, three hundred forty-four million, fifteen thousand, five hundred sixty-one".