1913603568 has 40 divisors (see below), whose sum is σ = 4973098368. Its totient is φ = 634045632.

The previous prime is 1913603513. The next prime is 1913603569. The reversal of 1913603568 is 8653063191.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913603569) 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, 111346 + ... + 127377.

Almost surely, 2^1913603568 is an apocalyptic number.

It is an amenable number.

1913603568 is an abundant number, since it is smaller than the sum of its proper divisors (3059494800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1913603568 is a wasteful number, since it uses less digits than its factorization.

1913603568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238901 (or 238895 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 1913603568 is about 43744.7547484267. The cubic root of 1913603568 is about 1241.5112444913.

The spelling of 1913603568 in words is "one billion, nine hundred thirteen million, six hundred three thousand, five hundred sixty-eight".