1022542489 has 2 divisors, whose sum is σ = 1022542490. Its totient is φ = 1022542488.

The previous prime is 1022542439. The next prime is 1022542553. The reversal of 1022542489 is 9842452201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 585398025 + 437144464 = 24195^2 + 20908^2 .

It is an emirp because it is prime and its reverse (9842452201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1022542489 - 2¹³ = 1022534297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1022542439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511271244 + 511271245.

It is an arithmetic number, because the mean of its divisors is an integer number (511271245).

Almost surely, 2^1022542489 is an apocalyptic number.

It is an amenable number.

1022542489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022542489 is an equidigital number, since it uses as much as digits as its factorization.

1022542489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 1022542489 is about 31977.2182811451. The cubic root of 1022542489 is about 1007.4583970162.

The spelling of 1022542489 in words is "one billion, twenty-two million, five hundred forty-two thousand, four hundred eighty-nine".