9500343661 has 2 divisors, whose sum is σ = 9500343662. Its totient is φ = 9500343660.

The previous prime is 9500343551. The next prime is 9500343673. The reversal of 9500343661 is 1663430059.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9449006436 + 51337225 = 97206^2 + 7165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9500343661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9500343661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9500343161) 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, 4750171830 + 4750171831.

It is an arithmetic number, because the mean of its divisors is an integer number (4750171831).

Almost surely, 2^9500343661 is an apocalyptic number.

It is an amenable number.

9500343661 is a deficient number, since it is larger than the sum of its proper divisors (1).

9500343661 is an equidigital number, since it uses as much as digits as its factorization.

9500343661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 9500343661 is about 97469.7063758787. The cubic root of 9500343661 is about 2117.9373301944.

The spelling of 9500343661 in words is "nine billion, five hundred million, three hundred forty-three thousand, six hundred sixty-one".