1381394008 has 16 divisors (see below), whose sum is σ = 2595788280. Its totient is φ = 689183808.

The previous prime is 1381393997. The next prime is 1381394011. The reversal of 1381394008 is 8004931831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185266 + ... + 192577.

Almost surely, 2^1381394008 is an apocalyptic number.

It is an amenable number.

1381394008 is a deficient number, since it is larger than the sum of its proper divisors (1214394272).

1381394008 is a wasteful number, since it uses less digits than its factorization.

1381394008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378306 (or 378302 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 1381394008 is about 37167.1092230752. The cubic root of 1381394008 is about 1113.7110345141.

The spelling of 1381394008 in words is "one billion, three hundred eighty-one million, three hundred ninety-four thousand, eight".