1022784361 has 3 divisors (see below), whose sum is σ = 1022816343. Its totient is φ = 1022752380.

The previous prime is 1022784359. The next prime is 1022784391. The reversal of 1022784361 is 1634872201.

The square root of 1022784361 is 31981.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1634872201 = 17 ⋅96168953.

It can be written as a sum of positive squares in only one way, i.e., 60543961 + 962240400 = 7781^2 + 31020^2 .

It is not a de Polignac number, because 1022784361 - 2¹ = 1022784359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022784331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 15991 + ... + 47971.

It is an arithmetic number, because the mean of its divisors is an integer number (340938781).

Almost surely, 2^1022784361 is an apocalyptic number.

1022784361 is the 31981-st square number.

1022784361 is the 15991-st centered octagonal number.

It is an amenable number.

1022784361 is a deficient number, since it is larger than the sum of its proper divisors (31982).

1022784361 is an frugal number, since it uses more digits than its factorization.

1022784361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63962 (or 31981 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The cubic root of 1022784361 is about 1007.5378254244.

The spelling of 1022784361 in words is "one billion, twenty-two million, seven hundred eighty-four thousand, three hundred sixty-one".