1381687396 has 12 divisors (see below), whose sum is σ = 2431462320. Its totient is φ = 686983880.

The previous prime is 1381687387. The next prime is 1381687403. The reversal of 1381687396 is 6937861831.

It is an unprimeable number.

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, 964150 + ... + 965581.

It is an arithmetic number, because the mean of its divisors is an integer number (202621860).

Almost surely, 2^1381687396 is an apocalyptic number.

It is an amenable number.

1381687396 is a deficient number, since it is larger than the sum of its proper divisors (1049774924).

1381687396 is a wasteful number, since it uses less digits than its factorization.

1381687396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929914 (or 1929912 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The square root of 1381687396 is about 37171.0558903026. The cubic root of 1381687396 is about 1113.7898742759.

The spelling of 1381687396 in words is "one billion, three hundred eighty-one million, six hundred eighty-seven thousand, three hundred ninety-six".