1630096021 has 2 divisors, whose sum is σ = 1630096022. Its totient is φ = 1630096020.

The previous prime is 1630096019. The next prime is 1630096049. The reversal of 1630096021 is 1206900361.

It is an a-pointer prime, because the next prime (1630096049) can be obtained adding 1630096021 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1055535121 + 574560900 = 32489^2 + 23970^2 .

It is an emirp because it is prime and its reverse (1206900361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1630096021 - 2¹ = 1630096019 is a prime.

Together with 1630096019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630093021) 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, 815048010 + 815048011.

It is an arithmetic number, because the mean of its divisors is an integer number (815048011).

Almost surely, 2^1630096021 is an apocalyptic number.

It is an amenable number.

1630096021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630096021 is an equidigital number, since it uses as much as digits as its factorization.

1630096021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1630096021 is about 40374.4476247044. The cubic root of 1630096021 is about 1176.8950307339.

Adding to 1630096021 its reverse (1206900361), we get a palindrome (2836996382).

The spelling of 1630096021 in words is "one billion, six hundred thirty million, ninety-six thousand, twenty-one".