1200665353 has 2 divisors, whose sum is σ = 1200665354. Its totient is φ = 1200665352.

The previous prime is 1200665351. The next prime is 1200665359. The reversal of 1200665353 is 3535660021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1052872704 + 147792649 = 32448^2 + 12157^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200665353 - 2¹ = 1200665351 is a prime.

It is a super-2 number, since 2×1200665353² = 2883194579789229218, which contains 22 as substring.

Together with 1200665351, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1200665351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600332676 + 600332677.

It is an arithmetic number, because the mean of its divisors is an integer number (600332677).

Almost surely, 2^1200665353 is an apocalyptic number.

It is an amenable number.

1200665353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200665353 is an equidigital number, since it uses as much as digits as its factorization.

1200665353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 1200665353 is about 34650.6183638907. The cubic root of 1200665353 is about 1062.8549337469.

The spelling of 1200665353 in words is "one billion, two hundred million, six hundred sixty-five thousand, three hundred fifty-three".