1349664865 has 8 divisors (see below), whose sum is σ = 1657263168. Its totient is φ = 1054621680.

The previous prime is 1349664853. The next prime is 1349664871. The reversal of 1349664865 is 5684669431.

It is a happy number.

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

It is not a de Polignac number, because 1349664865 - 2¹¹ = 1349662817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3138541 + ... + 3138970.

It is an arithmetic number, because the mean of its divisors is an integer number (207157896).

Almost surely, 2^1349664865 is an apocalyptic number.

It is an amenable number.

1349664865 is a deficient number, since it is larger than the sum of its proper divisors (307598303).

1349664865 is an equidigital number, since it uses as much as digits as its factorization.

1349664865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6277559.

The product of its digits is 3732480, while the sum is 52.

The square root of 1349664865 is about 36737.7852489777. The cubic root of 1349664865 is about 1105.1179866235.

The spelling of 1349664865 in words is "one billion, three hundred forty-nine million, six hundred sixty-four thousand, eight hundred sixty-five".