1283455612609 has 27 divisors (see below), whose sum is σ = 1378890573987. Its totient is φ = 1194381585984.

The previous prime is 1283455612603. The next prime is 1283455612627. The reversal of 1283455612609 is 9062165543821.

It is a happy number.

The square root of 1283455612609 is 1132897.

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

It can be written as a sum of positive squares in only one way, i.e., 999230148225 + 284225464384 = 999615^2 + 533128^2 .

It is not a de Polignac number, because 1283455612609 - 2¹⁵ = 1283455579841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1283455612603) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1983702324 + ... + 1983702970.

Almost surely, 2^{1283455612609} is an apocalyptic number.

1283455612609 is the 1132897-th square number.

1283455612609 is the 566449-th centered octagonal number.

It is an amenable number.

1283455612609 is a deficient number, since it is larger than the sum of its proper divisors (95434961378).

1283455612609 is an frugal number, since it uses more digits than its factorization.

1283455612609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 1283455612609 in words is "one trillion, two hundred eighty-three billion, four hundred fifty-five million, six hundred twelve thousand, six hundred nine".