9457989161 has 2 divisors, whose sum is σ = 9457989162. Its totient is φ = 9457989160.

The previous prime is 9457989131. The next prime is 9457989169. The reversal of 9457989161 is 1619897549.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9432294400 + 25694761 = 97120^2 + 5069^2 .

It is a cyclic number.

It is not a de Polignac number, because 9457989161 - 2⁶ = 9457989097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9457989161.

It is not a weakly prime, because it can be changed into another prime (9457989169) 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, 4728994580 + 4728994581.

It is an arithmetic number, because the mean of its divisors is an integer number (4728994581).

Almost surely, 2^9457989161 is an apocalyptic number.

It is an amenable number.

9457989161 is a deficient number, since it is larger than the sum of its proper divisors (1).

9457989161 is an equidigital number, since it uses as much as digits as its factorization.

9457989161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 59.

The square root of 9457989161 is about 97252.1936050802. The cubic root of 9457989161 is about 2114.7852402064.

The spelling of 9457989161 in words is "nine billion, four hundred fifty-seven million, nine hundred eighty-nine thousand, one hundred sixty-one".