1344518421 has 4 divisors (see below), whose sum is σ = 1792691232. Its totient is φ = 896345612.

The previous prime is 1344518419. The next prime is 1344518437. The reversal of 1344518421 is 1248154431.

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.

It is a cyclic number.

It is not a de Polignac number, because 1344518421 - 2¹ = 1344518419 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344518401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224086401 + ... + 224086406.

It is an arithmetic number, because the mean of its divisors is an integer number (448172808).

Almost surely, 2^1344518421 is an apocalyptic number.

It is an amenable number.

1344518421 is a deficient number, since it is larger than the sum of its proper divisors (448172811).

1344518421 is an equidigital number, since it uses as much as digits as its factorization.

1344518421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448172810.

The product of its digits is 15360, while the sum is 33.

The square root of 1344518421 is about 36667.6754240025. The cubic root of 1344518421 is about 1103.7115455890.

The spelling of 1344518421 in words is "one billion, three hundred forty-four million, five hundred eighteen thousand, four hundred twenty-one".