9518721341 has 2 divisors, whose sum is σ = 9518721342. Its totient is φ = 9518721340.

The previous prime is 9518721319. The next prime is 9518721347. The reversal of 9518721341 is 1431278159.

9518721341 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9297009241 + 221712100 = 96421^2 + 14890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9518721341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9518721347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4759360670 + 4759360671.

It is an arithmetic number, because the mean of its divisors is an integer number (4759360671).

Almost surely, 2^9518721341 is an apocalyptic number.

It is an amenable number.

9518721341 is a deficient number, since it is larger than the sum of its proper divisors (1).

9518721341 is an equidigital number, since it uses as much as digits as its factorization.

9518721341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 41.

The square root of 9518721341 is about 97563.9346326295. The cubic root of 9518721341 is about 2119.3021125342.

The spelling of 9518721341 in words is "nine billion, five hundred eighteen million, seven hundred twenty-one thousand, three hundred forty-one".