1964780864 has 14 divisors (see below), whose sum is σ = 3898862154. Its totient is φ = 982390400.

The previous prime is 1964780863. The next prime is 1964780869. The reversal of 1964780864 is 4680874691.

It can be written as a sum of positive squares in only one way, i.e., 1102771264 + 862009600 = 33208^2 + 29360^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964780863) 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, 15349787 + ... + 15349914.

Almost surely, 2^1964780864 is an apocalyptic number.

It is an amenable number.

1964780864 is a deficient number, since it is larger than the sum of its proper divisors (1934081290).

1964780864 is an equidigital number, since it uses as much as digits as its factorization.

1964780864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30699713 (or 30699703 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 53.

The square root of 1964780864 is about 44325.8487115588. The cubic root of 1964780864 is about 1252.4816541736.

The spelling of 1964780864 in words is "one billion, nine hundred sixty-four million, seven hundred eighty thousand, eight hundred sixty-four".