1383156866 has 32 divisors (see below), whose sum is σ = 2622547200. Its totient is φ = 532391616.

The previous prime is 1383156857. The next prime is 1383156881. The reversal of 1383156866 is 6686513831.

It is a self number, because there is not a number n which added to its sum of digits gives 1383156866.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95966 + ... + 109433.

It is an arithmetic number, because the mean of its divisors is an integer number (81954600).

Almost surely, 2^1383156866 is an apocalyptic number.

1383156866 is a deficient number, since it is larger than the sum of its proper divisors (1239390334).

1383156866 is a wasteful number, since it uses less digits than its factorization.

1383156866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205458.

The product of its digits is 622080, while the sum is 47.

The square root of 1383156866 is about 37190.8169579535. The cubic root of 1383156866 is about 1114.1845851037.

The spelling of 1383156866 in words is "one billion, three hundred eighty-three million, one hundred fifty-six thousand, eight hundred sixty-six".