1349816385 has 16 divisors (see below), whose sum is σ = 2165267520. Its totient is φ = 718048320.

The previous prime is 1349816381. The next prime is 1349816393. The reversal of 1349816385 is 5836189431.

It is not a de Polignac number, because 1349816385 - 2² = 1349816381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1349816381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109831 + ... + 121500.

It is an arithmetic number, because the mean of its divisors is an integer number (135329220).

Almost surely, 2^1349816385 is an apocalyptic number.

1349816385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1349816385 is a deficient number, since it is larger than the sum of its proper divisors (815451135).

1349816385 is a wasteful number, since it uses less digits than its factorization.

1349816385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231728.

The product of its digits is 622080, while the sum is 48.

The square root of 1349816385 is about 36739.8473731179. The cubic root of 1349816385 is about 1105.1593403985.

The spelling of 1349816385 in words is "one billion, three hundred forty-nine million, eight hundred sixteen thousand, three hundred eighty-five".