1394665682 has 8 divisors (see below), whose sum is σ = 2111191500. Its totient is φ = 690935184.

The previous prime is 1394665681. The next prime is 1394665729. The reversal of 1394665682 is 2865664931.

It can be written as a sum of positive squares in 2 ways, for example, as 1282284481 + 112381201 = 35809^2 + 10601^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1394665682.

It is not an unprimeable number, because it can be changed into a prime (1394665681) 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 in 3 ways as a sum of consecutive naturals, for example, 3198557 + ... + 3198992.

Almost surely, 2^1394665682 is an apocalyptic number.

1394665682 is a deficient number, since it is larger than the sum of its proper divisors (716525818).

1394665682 is a wasteful number, since it uses less digits than its factorization.

1394665682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6397660.

The product of its digits is 1866240, while the sum is 50.

The square root of 1394665682 is about 37345.2230144633. The cubic root of 1394665682 is about 1117.2663140461.

The spelling of 1394665682 in words is "one billion, three hundred ninety-four million, six hundred sixty-five thousand, six hundred eighty-two".