1343663506 has 4 divisors (see below), whose sum is σ = 2015495262. Its totient is φ = 671831752.

The previous prime is 1343663483. The next prime is 1343663509. The reversal of 1343663506 is 6053663431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6053663431 = 251 ⋅24118181.

It can be written as a sum of positive squares in only one way, i.e., 937278225 + 406385281 = 30615^2 + 20159^2 .

It is not an unprimeable number, because it can be changed into a prime (1343663509) 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 as a sum of consecutive naturals, namely, 335915875 + ... + 335915878.

Almost surely, 2^1343663506 is an apocalyptic number.

1343663506 is a deficient number, since it is larger than the sum of its proper divisors (671831756).

1343663506 is an equidigital number, since it uses as much as digits as its factorization.

1343663506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671831755.

The product of its (nonzero) digits is 116640, while the sum is 37.

The square root of 1343663506 is about 36656.0159591847. The cubic root of 1343663506 is about 1103.4775635168.

The spelling of 1343663506 in words is "one billion, three hundred forty-three million, six hundred sixty-three thousand, five hundred six".