1634041489 has 2 divisors, whose sum is σ = 1634041490. Its totient is φ = 1634041488.

The previous prime is 1634041427. The next prime is 1634041531. The reversal of 1634041489 is 9841404361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1211040000 + 423001489 = 34800^2 + 20567^2 .

It is an emirp because it is prime and its reverse (9841404361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1634041489 - 2²⁹ = 1097170577 is a prime.

It is not a weakly prime, because it can be changed into another prime (1634041289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 817020744 + 817020745.

It is an arithmetic number, because the mean of its divisors is an integer number (817020745).

Almost surely, 2^1634041489 is an apocalyptic number.

It is an amenable number.

1634041489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1634041489 is an equidigital number, since it uses as much as digits as its factorization.

1634041489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 1634041489 is about 40423.2790480931. The cubic root of 1634041489 is about 1177.8437806586.

The spelling of 1634041489 in words is "one billion, six hundred thirty-four million, forty-one thousand, four hundred eighty-nine".