1200630807289 has 3 divisors (see below), whose sum is σ = 1200631903023. Its totient is φ = 1200629711556.

The previous prime is 1200630807287. The next prime is 1200630807301. The reversal of 1200630807289 is 9827080360021.

The square root of 1200630807289 is 1095733.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 347763781225 + 852867026064 = 589715^2 + 923508^2 .

It is not a de Polignac number, because 1200630807289 - 2¹ = 1200630807287 is a prime.

It is a super-2 number, since 2×1200630807289² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200630807287) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 547867 + ... + 1643599.

It is an arithmetic number, because the mean of its divisors is an integer number (400210634341).

Almost surely, 2^{1200630807289} is an apocalyptic number.

1200630807289 is the 1095733-rd square number.

1200630807289 is the 547867-th centered octagonal number.

It is an amenable number.

1200630807289 is a deficient number, since it is larger than the sum of its proper divisors (1095734).

1200630807289 is an frugal number, since it uses more digits than its factorization.

1200630807289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191466 (or 1095733 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 1200630807289 in words is "one trillion, two hundred billion, six hundred thirty million, eight hundred seven thousand, two hundred eighty-nine".