1913968808 has 8 divisors (see below), whose sum is σ = 3588691530. Its totient is φ = 956984400.

The previous prime is 1913968769. The next prime is 1913968811. The reversal of 1913968808 is 8088693191.

It can be written as a sum of positive squares in only one way, i.e., 1861232164 + 52736644 = 43142^2 + 7262^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1913968808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119623043 + ... + 119623058.

Almost surely, 2^1913968808 is an apocalyptic number.

It is an amenable number.

1913968808 is a deficient number, since it is larger than the sum of its proper divisors (1674722722).

1913968808 is a wasteful number, since it uses less digits than its factorization.

1913968808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239246107 (or 239246103 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 53.

The square root of 1913968808 is about 43748.9292211821. The cubic root of 1913968808 is about 1241.5902264930.

The spelling of 1913968808 in words is "one billion, nine hundred thirteen million, nine hundred sixty-eight thousand, eight hundred eight".