1200383813 has 2 divisors, whose sum is σ = 1200383814. Its totient is φ = 1200383812.

The previous prime is 1200383797. The next prime is 1200383857. The reversal of 1200383813 is 3183830021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 961434049 + 238949764 = 31007^2 + 15458^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200383813 - 2⁴ = 1200383797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200383893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600191906 + 600191907.

It is an arithmetic number, because the mean of its divisors is an integer number (600191907).

Almost surely, 2^1200383813 is an apocalyptic number.

It is an amenable number.

1200383813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200383813 is an equidigital number, since it uses as much as digits as its factorization.

1200383813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1200383813 is about 34646.5555719468. Note that the first 4 decimals coincide. The cubic root of 1200383813 is about 1062.7718521540.

The spelling of 1200383813 in words is "one billion, two hundred million, three hundred eighty-three thousand, eight hundred thirteen".