1381078808 has 16 divisors (see below), whose sum is σ = 2589927480. Its totient is φ = 690431488.

The previous prime is 1381078801. The next prime is 1381078813. The reversal of 1381078808 is 8088701831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381078801) 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, 75191 + ... + 91737.

Almost surely, 2^1381078808 is an apocalyptic number.

It is an amenable number.

1381078808 is a deficient number, since it is larger than the sum of its proper divisors (1208848672).

1381078808 is a wasteful number, since it uses less digits than its factorization.

1381078808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26986 (or 26982 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 44.

The square root of 1381078808 is about 37162.8686729106. The cubic root of 1381078808 is about 1113.6263209520.

The spelling of 1381078808 in words is "one billion, three hundred eighty-one million, seventy-eight thousand, eight hundred eight".