1968633512 has 8 divisors (see below), whose sum is σ = 3691187850. Its totient is φ = 984316752.

The previous prime is 1968633497. The next prime is 1968633533. The reversal of 1968633512 is 2153368691.

It can be written as a sum of positive squares in only one way, i.e., 1771904836 + 196728676 = 42094^2 + 14026^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123039587 + ... + 123039602.

Almost surely, 2^1968633512 is an apocalyptic number.

It is an amenable number.

1968633512 is a deficient number, since it is larger than the sum of its proper divisors (1722554338).

1968633512 is a wasteful number, since it uses less digits than its factorization.

1968633512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246079195 (or 246079191 counting only the distinct ones).

The product of its digits is 233280, while the sum is 44.

The square root of 1968633512 is about 44369.2856827784. The cubic root of 1968633512 is about 1253.2997641404.

The spelling of 1968633512 in words is "one billion, nine hundred sixty-eight million, six hundred thirty-three thousand, five hundred twelve".