1344392643 has 24 divisors (see below), whose sum is σ = 2038251600. Its totient is φ = 786681280.

The previous prime is 1344392641. The next prime is 1344392659. The reversal of 1344392643 is 3462934431.

It is not a de Polignac number, because 1344392643 - 2¹ = 1344392641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1344392641) 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 23 ways as a sum of consecutive naturals, for example, 53328 + ... + 74381.

It is an arithmetic number, because the mean of its divisors is an integer number (84927150).

Almost surely, 2^1344392643 is an apocalyptic number.

1344392643 is a deficient number, since it is larger than the sum of its proper divisors (693858957).

1344392643 is a wasteful number, since it uses less digits than its factorization.

1344392643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127763 (or 127752 counting only the distinct ones).

The product of its digits is 186624, while the sum is 39.

The square root of 1344392643 is about 36665.9602765290. The cubic root of 1344392643 is about 1103.6771275754.

The spelling of 1344392643 in words is "one billion, three hundred forty-four million, three hundred ninety-two thousand, six hundred forty-three".