1963681652 has 24 divisors (see below), whose sum is σ = 3471310920. Its totient is φ = 971896320.

The previous prime is 1963681651. The next prime is 1963681661. The reversal of 1963681652 is 2561863691.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1266932836 + 696748816 = 35594^2 + 26396^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1963681597 and 1963681606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1963681651) 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 in 7 ways as a sum of consecutive naturals, for example, 749048 + ... + 751664.

It is an arithmetic number, because the mean of its divisors is an integer number (144637955).

Almost surely, 2^1963681652 is an apocalyptic number.

It is an amenable number.

1963681652 is a deficient number, since it is larger than the sum of its proper divisors (1507629268).

1963681652 is a wasteful number, since it uses less digits than its factorization.

1963681652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4451 (or 4449 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 1963681652 is about 44313.4477557321. The cubic root of 1963681652 is about 1252.2480403879.

The spelling of 1963681652 in words is "one billion, nine hundred sixty-three million, six hundred eighty-one thousand, six hundred fifty-two".