1344322757 has 4 divisors (see below), whose sum is σ = 1351833120. Its totient is φ = 1336812396.

The previous prime is 1344322747. The next prime is 1344322783. The reversal of 1344322757 is 7572234431.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7572234431 = 2333 ⋅3245707.

It is a cyclic number.

It is not a de Polignac number, because 1344322757 - 2⁴ = 1344322741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1344322757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344322747) 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, 3754913 + ... + 3755270.

It is an arithmetic number, because the mean of its divisors is an integer number (337958280).

Almost surely, 2^1344322757 is an apocalyptic number.

It is an amenable number.

1344322757 is a deficient number, since it is larger than the sum of its proper divisors (7510363).

1344322757 is an equidigital number, since it uses as much as digits as its factorization.

1344322757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7510362.

The product of its digits is 141120, while the sum is 38.

The square root of 1344322757 is about 36665.0072548745. The cubic root of 1344322757 is about 1103.6580029750.

The spelling of 1344322757 in words is "one billion, three hundred forty-four million, three hundred twenty-two thousand, seven hundred fifty-seven".