7865383961 has 2 divisors, whose sum is σ = 7865383962. Its totient is φ = 7865383960.

The previous prime is 7865383951. The next prime is 7865384003. The reversal of 7865383961 is 1693835687.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5700250000 + 2165133961 = 75500^2 + 46531^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7865383961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7865383897 and 7865383906.

It is not a weakly prime, because it can be changed into another prime (7865383951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3932691980 + 3932691981.

It is an arithmetic number, because the mean of its divisors is an integer number (3932691981).

Almost surely, 2^7865383961 is an apocalyptic number.

It is an amenable number.

7865383961 is a deficient number, since it is larger than the sum of its proper divisors (1).

7865383961 is an equidigital number, since it uses as much as digits as its factorization.

7865383961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 56.

The square root of 7865383961 is about 88686.9999548976. Note that the first 4 decimals coincide. The cubic root of 7865383961 is about 1988.7184800563.

The spelling of 7865383961 in words is "seven billion, eight hundred sixty-five million, three hundred eighty-three thousand, nine hundred sixty-one".