9161660378 has 16 divisors (see below), whose sum is σ = 14801375400. Its totient is φ = 4227952896.

The previous prime is 9161660363. The next prime is 9161660393. The reversal of 9161660378 is 8730661619.

It is a happy number.

9161660378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9161660363) and next prime (9161660393).

It can be written as a sum of positive squares in 4 ways, for example, as 3884654929 + 5277005449 = 62327^2 + 72643^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283598 + ... + 314246.

Almost surely, 2^9161660378 is an apocalyptic number.

9161660378 is a deficient number, since it is larger than the sum of its proper divisors (5639715022).

9161660378 is a wasteful number, since it uses less digits than its factorization.

9161660378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42161.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 9161660378 is about 95716.5627151331. The cubic root of 9161660378 is about 2092.4643274262.

The spelling of 9161660378 in words is "nine billion, one hundred sixty-one million, six hundred sixty thousand, three hundred seventy-eight".