1387803838 has 8 divisors (see below), whose sum is σ = 2083514688. Its totient is φ = 693298944.

The previous prime is 1387803821. The next prime is 1387803853. The reversal of 1387803838 is 8383087831.

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

It is a junction number, because it is equal to n+sod(n) for n = 1387803791 and 1387803800.

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, 298606 + ... + 303217.

It is an arithmetic number, because the mean of its divisors is an integer number (260439336).

Almost surely, 2^1387803838 is an apocalyptic number.

1387803838 is a deficient number, since it is larger than the sum of its proper divisors (695710850).

1387803838 is a wasteful number, since it uses less digits than its factorization.

1387803838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602978.

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 1387803838 is about 37253.2392953955. The cubic root of 1387803838 is about 1115.4309602483.

The spelling of 1387803838 in words is "one billion, three hundred eighty-seven million, eight hundred three thousand, eight hundred thirty-eight".