1963643012 has 48 divisors (see below), whose sum is σ = 3671377920. Its totient is φ = 917280000.

The previous prime is 1963642999. The next prime is 1963643023. The reversal of 1963643012 is 2103463691.

It is a happy number.

It is a super-3 number, since 3×1963643012³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602387 + ... + 605637.

It is an arithmetic number, because the mean of its divisors is an integer number (76487040).

Almost surely, 2^1963643012 is an apocalyptic number.

It is an amenable number.

1963643012 is a deficient number, since it is larger than the sum of its proper divisors (1707734908).

1963643012 is a wasteful number, since it uses less digits than its factorization.

1963643012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3452 (or 3450 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 1963643012 is about 44313.0117685539. The cubic root of 1963643012 is about 1252.2398267039.

The spelling of 1963643012 in words is "one billion, nine hundred sixty-three million, six hundred forty-three thousand, twelve".