1964889763 has 2 divisors, whose sum is σ = 1964889764. Its totient is φ = 1964889762.

The previous prime is 1964889749. The next prime is 1964889821. The reversal of 1964889763 is 3679884691.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1964889763 is a prime.

It is not a weakly prime, because it can be changed into another prime (1964889743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982444881 + 982444882.

It is an arithmetic number, because the mean of its divisors is an integer number (982444882).

Almost surely, 2^1964889763 is an apocalyptic number.

1964889763 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964889763 is an equidigital number, since it uses as much as digits as its factorization.

1964889763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 61.

The square root of 1964889763 is about 44327.0770861333. The cubic root of 1964889763 is about 1252.5047935615.

The spelling of 1964889763 in words is "one billion, nine hundred sixty-four million, eight hundred eighty-nine thousand, seven hundred sixty-three".