1634046221 has 2 divisors, whose sum is σ = 1634046222. Its totient is φ = 1634046220.

The previous prime is 1634046199. The next prime is 1634046229. The reversal of 1634046221 is 1226404361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1610416900 + 23629321 = 40130^2 + 4861^2 .

It is a cyclic number.

It is not a de Polignac number, because 1634046221 - 2⁶ = 1634046157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1634046229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 817023110 + 817023111.

It is an arithmetic number, because the mean of its divisors is an integer number (817023111).

Almost surely, 2^1634046221 is an apocalyptic number.

It is an amenable number.

1634046221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1634046221 is an equidigital number, since it uses as much as digits as its factorization.

1634046221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1634046221 is about 40423.3375786810. The cubic root of 1634046221 is about 1177.8449176251.

The spelling of 1634046221 in words is "one billion, six hundred thirty-four million, forty-six thousand, two hundred twenty-one".