1963082521 has 2 divisors, whose sum is σ = 1963082522. Its totient is φ = 1963082520.

The previous prime is 1963082519. The next prime is 1963082557. The reversal of 1963082521 is 1252803691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1454354496 + 508728025 = 38136^2 + 22555^2 .

It is an emirp because it is prime and its reverse (1252803691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1963082521 - 2¹ = 1963082519 is a prime.

Together with 1963082519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1963085521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981541260 + 981541261.

It is an arithmetic number, because the mean of its divisors is an integer number (981541261).

Almost surely, 2^1963082521 is an apocalyptic number.

It is an amenable number.

1963082521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1963082521 is an equidigital number, since it uses as much as digits as its factorization.

1963082521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1963082521 is about 44306.6870912281. The cubic root of 1963082521 is about 1252.1206713146.

The spelling of 1963082521 in words is "one billion, nine hundred sixty-three million, eighty-two thousand, five hundred twenty-one".