1382678644 has 6 divisors (see below), whose sum is σ = 2419687634. Its totient is φ = 691339320.

The previous prime is 1382678639. The next prime is 1382678651. The reversal of 1382678644 is 4468762831.

It can be written as a sum of positive squares in only one way, i.e., 1197990544 + 184688100 = 34612^2 + 13590^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172834827 + ... + 172834834.

Almost surely, 2^1382678644 is an apocalyptic number.

It is an amenable number.

1382678644 is a deficient number, since it is larger than the sum of its proper divisors (1037008990).

1382678644 is a wasteful number, since it uses less digits than its factorization.

1382678644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345669665 (or 345669663 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 49.

The square root of 1382678644 is about 37184.3870999644. The cubic root of 1382678644 is about 1114.0561617332.

The spelling of 1382678644 in words is "one billion, three hundred eighty-two million, six hundred seventy-eight thousand, six hundred forty-four".