964890161 has 2 divisors, whose sum is σ = 964890162. Its totient is φ = 964890160.

The previous prime is 964890133. The next prime is 964890169. The reversal of 964890161 is 161098469.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 645160000 + 319730161 = 25400^2 + 17881^2 .

It is a cyclic number.

It is not a de Polignac number, because 964890161 - 2¹⁸ = 964628017 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (964890169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482445080 + 482445081.

It is an arithmetic number, because the mean of its divisors is an integer number (482445081).

Almost surely, 2^964890161 is an apocalyptic number.

It is an amenable number.

964890161 is a deficient number, since it is larger than the sum of its proper divisors (1).

964890161 is an equidigital number, since it uses as much as digits as its factorization.

964890161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 964890161 is about 31062.6811624496. The cubic root of 964890161 is about 988.1570177897.

The spelling of 964890161 in words is "nine hundred sixty-four million, eight hundred ninety thousand, one hundred sixty-one".