1964889163 has 2 divisors, whose sum is σ = 1964889164. Its totient is φ = 1964889162.

The previous prime is 1964889139. The next prime is 1964889217. The reversal of 1964889163 is 3619884691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1964889163 - 2¹³ = 1964880971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1964889763) by changing a digit.

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 as a sum of consecutive naturals, namely, 982444581 + 982444582.

It is an arithmetic number, because the mean of its divisors is an integer number (982444582).

Almost surely, 2^1964889163 is an apocalyptic number.

1964889163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964889163 is an equidigital number, since it uses as much as digits as its factorization.

1964889163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 55.

The square root of 1964889163 is about 44327.0703182604. The cubic root of 1964889163 is about 1252.5046660729.

It can be divided in two parts, 19648 and 89163, that added together give a triangular number (108811 = T₄₆₆).

The spelling of 1964889163 in words is "one billion, nine hundred sixty-four million, eight hundred eighty-nine thousand, one hundred sixty-three".