1963708864 has 112 divisors (see below), whose sum is σ = 4337182080. Its totient is φ = 876395520.

The previous prime is 1963708861. The next prime is 1963708867. The reversal of 1963708864 is 4688073691.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1963708861) and next prime (1963708867).

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1963708861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4686447 + ... + 4686865.

It is an arithmetic number, because the mean of its divisors is an integer number (38724840).

Almost surely, 2^1963708864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1963708864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2168591040).

1963708864 is an abundant number, since it is smaller than the sum of its proper divisors (2373473216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1963708864 is a wasteful number, since it uses less digits than its factorization.

1963708864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 1963708864 is about 44313.7547946459. The cubic root of 1963708864 is about 1252.2538247634.

The spelling of 1963708864 in words is "one billion, nine hundred sixty-three million, seven hundred eight thousand, eight hundred sixty-four".