1343405665 has 32 divisors (see below), whose sum is σ = 1872000000. Its totient is φ = 906467328.

The previous prime is 1343405663. The next prime is 1343405683. The reversal of 1343405665 is 5665043431.

It is a cyclic number.

It is not a de Polignac number, because 1343405665 - 2¹ = 1343405663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1343405663) 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 31 ways as a sum of consecutive naturals, for example, 1074961 + ... + 1076209.

It is an arithmetic number, because the mean of its divisors is an integer number (58500000).

Almost surely, 2^1343405665 is an apocalyptic number.

It is an amenable number.

1343405665 is a deficient number, since it is larger than the sum of its proper divisors (528594335).

1343405665 is a wasteful number, since it uses less digits than its factorization.

1343405665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729.

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 1343405665 is about 36652.4987552009. The cubic root of 1343405665 is about 1103.4069754173.

The spelling of 1343405665 in words is "one billion, three hundred forty-three million, four hundred five thousand, six hundred sixty-five".