7963881953 has 2 divisors, whose sum is σ = 7963881954. Its totient is φ = 7963881952.

The previous prime is 7963881949. The next prime is 7963881971. The reversal of 7963881953 is 3591883697.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7304779024 + 659102929 = 85468^2 + 25673^2 .

It is a cyclic number.

It is not a de Polignac number, because 7963881953 - 2² = 7963881949 is a prime.

It is a super-2 number, since 2×7963881953² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7963881892 and 7963881901.

It is not a weakly prime, because it can be changed into another prime (7963881553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3981940976 + 3981940977.

It is an arithmetic number, because the mean of its divisors is an integer number (3981940977).

Almost surely, 2^7963881953 is an apocalyptic number.

It is an amenable number.

7963881953 is a deficient number, since it is larger than the sum of its proper divisors (1).

7963881953 is an equidigital number, since it uses as much as digits as its factorization.

7963881953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 59.

The square root of 7963881953 is about 89240.5846742389. The cubic root of 7963881953 is about 1996.9856217945.

The spelling of 7963881953 in words is "seven billion, nine hundred sixty-three million, eight hundred eighty-one thousand, nine hundred fifty-three".