1344401643 has 8 divisors (see below), whose sum is σ = 1930422928. Its totient is φ = 827324064.

The previous prime is 1344401609. The next prime is 1344401651. The reversal of 1344401643 is 3461044431.

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

It is not a de Polignac number, because 1344401643 - 2⁹ = 1344401131 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 1344401643.

It is not an unprimeable number, because it can be changed into a prime (1344401683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17235880 + ... + 17235957.

It is an arithmetic number, because the mean of its divisors is an integer number (241302866).

Almost surely, 2^1344401643 is an apocalyptic number.

1344401643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1344401643 is a deficient number, since it is larger than the sum of its proper divisors (586021285).

1344401643 is a wasteful number, since it uses less digits than its factorization.

1344401643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34471853.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 1344401643 is about 36666.0830059607. The cubic root of 1344401643 is about 1103.6795904154.

The spelling of 1344401643 in words is "one billion, three hundred forty-four million, four hundred one thousand, six hundred forty-three".