1634314021 has 2 divisors, whose sum is σ = 1634314022. Its totient is φ = 1634314020.

The previous prime is 1634314007. The next prime is 1634314037. The reversal of 1634314021 is 1204134361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1360576996 + 273737025 = 36886^2 + 16545^2 .

It is a cyclic number.

It is not a de Polignac number, because 1634314021 - 2⁹ = 1634313509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1634314061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 817157010 + 817157011.

It is an arithmetic number, because the mean of its divisors is an integer number (817157011).

Almost surely, 2^1634314021 is an apocalyptic number.

It is an amenable number.

1634314021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1634314021 is an equidigital number, since it uses as much as digits as its factorization.

1634314021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1634314021 is about 40426.6498859354. The cubic root of 1634314021 is about 1177.9092588567.

Adding to 1634314021 its reverse (1204134361), we get a palindrome (2838448382).

The spelling of 1634314021 in words is "one billion, six hundred thirty-four million, three hundred fourteen thousand, twenty-one".