1968365906 has 16 divisors (see below), whose sum is σ = 3233563200. Its totient is φ = 893077968.

The previous prime is 1968365897. The next prime is 1968365939. The reversal of 1968365906 is 6095638691.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 640046 + ... + 643113.

It is an arithmetic number, because the mean of its divisors is an integer number (202097700).

Almost surely, 2^1968365906 is an apocalyptic number.

1968365906 is a deficient number, since it is larger than the sum of its proper divisors (1265197294).

1968365906 is a wasteful number, since it uses less digits than its factorization.

1968365906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283233.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The square root of 1968365906 is about 44366.2699130770. The cubic root of 1968365906 is about 1253.2429725075.

The spelling of 1968365906 in words is "one billion, nine hundred sixty-eight million, three hundred sixty-five thousand, nine hundred six".