1383206811 has 16 divisors (see below), whose sum is σ = 2111042304. Its totient is φ = 789166944.

The previous prime is 1383206777. The next prime is 1383206831. The reversal of 1383206811 is 1186023831.

1383206811 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-1383206811 is a prime.

It is a super-2 number, since 2×1383206811² = 3826522163993579442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1383206831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37716 + ... + 64721.

It is an arithmetic number, because the mean of its divisors is an integer number (131940144).

Almost surely, 2^1383206811 is an apocalyptic number.

1383206811 is a deficient number, since it is larger than the sum of its proper divisors (727835493).

1383206811 is a wasteful number, since it uses less digits than its factorization.

1383206811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103090.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1383206811 is about 37191.4884214117. The cubic root of 1383206811 is about 1114.1979957975.

The spelling of 1383206811 in words is "one billion, three hundred eighty-three million, two hundred six thousand, eight hundred eleven".