1385785899 has 6 divisors (see below), whose sum is σ = 2001690756. Its totient is φ = 923857260.

The previous prime is 1385785883. The next prime is 1385785939. The reversal of 1385785899 is 9985875831.

1385785899 is a `hidden beast` number, since 1 + 3 + 8 + 578 + 58 + 9 + 9 = 666.

It is not a de Polignac number, because 1385785899 - 2⁴ = 1385785883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1385785699) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76988097 + ... + 76988114.

It is an arithmetic number, because the mean of its divisors is an integer number (333615126).

Almost surely, 2^1385785899 is an apocalyptic number.

1385785899 is a deficient number, since it is larger than the sum of its proper divisors (615904857).

1385785899 is a wasteful number, since it uses less digits than its factorization.

1385785899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153976217 (or 153976214 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 63.

The square root of 1385785899 is about 37226.1453685444. The cubic root of 1385785899 is about 1114.8900664470.

The spelling of 1385785899 in words is "one billion, three hundred eighty-five million, seven hundred eighty-five thousand, eight hundred ninety-nine".