1422782689 has 2 divisors, whose sum is σ = 1422782690. Its totient is φ = 1422782688.

The previous prime is 1422782633. The next prime is 1422782693. The reversal of 1422782689 is 9862872241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 767013025 + 655769664 = 27695^2 + 25608^2 .

It is a cyclic number.

It is not a de Polignac number, because 1422782689 - 2¹⁹ = 1422258401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1422782089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711391344 + 711391345.

It is an arithmetic number, because the mean of its divisors is an integer number (711391345).

Almost surely, 2^1422782689 is an apocalyptic number.

It is an amenable number.

1422782689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422782689 is an equidigital number, since it uses as much as digits as its factorization.

1422782689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 49.

The square root of 1422782689 is about 37719.7917412066. The cubic root of 1422782689 is about 1124.7245914147.

The spelling of 1422782689 in words is "one billion, four hundred twenty-two million, seven hundred eighty-two thousand, six hundred eighty-nine".