1968064535 has 8 divisors (see below), whose sum is σ = 2363517360. Its totient is φ = 1573225024.

The previous prime is 1968064531. The next prime is 1968064537. The reversal of 1968064535 is 5354608691.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1968064535 - 2² = 1968064531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1968064535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968064531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146237 + ... + 159126.

It is an arithmetic number, because the mean of its divisors is an integer number (295439670).

Almost surely, 2^1968064535 is an apocalyptic number.

1968064535 is a deficient number, since it is larger than the sum of its proper divisors (395452825).

1968064535 is a wasteful number, since it uses less digits than its factorization.

1968064535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306657.

The product of its (nonzero) digits is 777600, while the sum is 47.

The square root of 1968064535 is about 44362.8733852982. The cubic root of 1968064535 is about 1253.1790090672.

The spelling of 1968064535 in words is "one billion, nine hundred sixty-eight million, sixty-four thousand, five hundred thirty-five".