7963486261 has 2 divisors, whose sum is σ = 7963486262. Its totient is φ = 7963486260.

The previous prime is 7963486253. The next prime is 7963486337. The reversal of 7963486261 is 1626843697.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7764958161 + 198528100 = 88119^2 + 14090^2 .

It is a cyclic number.

It is not a de Polignac number, because 7963486261 - 2³ = 7963486253 is a prime.

It is a super-2 number, since 2×7963486261² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7963486199 and 7963486208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7963486231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3981743130 + 3981743131.

It is an arithmetic number, because the mean of its divisors is an integer number (3981743131).

Almost surely, 2^7963486261 is an apocalyptic number.

It is an amenable number.

7963486261 is a deficient number, since it is larger than the sum of its proper divisors (1).

7963486261 is an equidigital number, since it uses as much as digits as its factorization.

7963486261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 52.

The square root of 7963486261 is about 89238.3676509157. The cubic root of 7963486261 is about 1996.9525472911.

The spelling of 7963486261 in words is "seven billion, nine hundred sixty-three million, four hundred eighty-six thousand, two hundred sixty-one".