1349664266 has 4 divisors (see below), whose sum is σ = 2024496402. Its totient is φ = 674832132.

The previous prime is 1349664257. The next prime is 1349664271. The reversal of 1349664266 is 6624669431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6624669431 = 59453 ⋅111427.

It can be written as a sum of positive squares in only one way, i.e., 1341683641 + 7980625 = 36629^2 + 2825^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1349664266.

It is an unprimeable number.

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, 337416065 + ... + 337416068.

Almost surely, 2^1349664266 is an apocalyptic number.

1349664266 is a deficient number, since it is larger than the sum of its proper divisors (674832136).

1349664266 is an equidigital number, since it uses as much as digits as its factorization.

1349664266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674832135.

The product of its digits is 1119744, while the sum is 47.

The square root of 1349664266 is about 36737.7770966072. Note that the first 3 decimals coincide. The cubic root of 1349664266 is about 1105.1178231345.

The spelling of 1349664266 in words is "one billion, three hundred forty-nine million, six hundred sixty-four thousand, two hundred sixty-six".