1200664513 has 2 divisors, whose sum is σ = 1200664514. Its totient is φ = 1200664512.

The previous prime is 1200664501. The next prime is 1200664519. The reversal of 1200664513 is 3154660021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 767733264 + 432931249 = 27708^2 + 20807^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200664513 - 2⁵ = 1200664481 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200664519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600332256 + 600332257.

It is an arithmetic number, because the mean of its divisors is an integer number (600332257).

Almost surely, 2^1200664513 is an apocalyptic number.

It is an amenable number.

1200664513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200664513 is an equidigital number, since it uses as much as digits as its factorization.

1200664513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1200664513 is about 34650.6062428928. The cubic root of 1200664513 is about 1062.8546858848.

The spelling of 1200664513 in words is "one billion, two hundred million, six hundred sixty-four thousand, five hundred thirteen".