1630740213461 has 2 divisors, whose sum is σ = 1630740213462. Its totient is φ = 1630740213460.

The previous prime is 1630740213413. The next prime is 1630740213463. The reversal of 1630740213461 is 1643120470361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1048922140561 + 581818072900 = 1024169^2 + 762770^2 .

It is an emirp because it is prime and its reverse (1643120470361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1630740213461 - 2⁶ = 1630740213397 is a prime.

Together with 1630740213463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630740213463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815370106730 + 815370106731.

It is an arithmetic number, because the mean of its divisors is an integer number (815370106731).

Almost surely, 2^{1630740213461} is an apocalyptic number.

It is an amenable number.

1630740213461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630740213461 is an equidigital number, since it uses as much as digits as its factorization.

1630740213461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 1630740213461 in words is "one trillion, six hundred thirty billion, seven hundred forty million, two hundred thirteen thousand, four hundred sixty-one".