1394649313 has 4 divisors (see below), whose sum is σ = 1410319620. Its totient is φ = 1378979008.

The previous prime is 1394649299. The next prime is 1394649409. The reversal of 1394649313 is 3139464931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 765241569 + 629407744 = 27663^2 + 25088^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1394649313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1394649313.

It is not an unprimeable number, because it can be changed into a prime (1394619313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7835020 + ... + 7835197.

It is an arithmetic number, because the mean of its divisors is an integer number (352579905).

Almost surely, 2^1394649313 is an apocalyptic number.

It is an amenable number.

1394649313 is a deficient number, since it is larger than the sum of its proper divisors (15670307).

1394649313 is an equidigital number, since it uses as much as digits as its factorization.

1394649313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15670306.

The product of its digits is 209952, while the sum is 43.

The square root of 1394649313 is about 37345.0038559377. The cubic root of 1394649313 is about 1117.2619429618.

The spelling of 1394649313 in words is "one billion, three hundred ninety-four million, six hundred forty-nine thousand, three hundred thirteen".