1913965008 has 80 divisors (see below), whose sum is σ = 5125148160. Its totient is φ = 614988288.

The previous prime is 1913965007. The next prime is 1913965013. The reversal of 1913965008 is 8005693191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913965003) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 188641 + ... + 198527.

It is an arithmetic number, because the mean of its divisors is an integer number (64064352).

Almost surely, 2^1913965008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1913965008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2562574080).

1913965008 is an abundant number, since it is smaller than the sum of its proper divisors (3211183152).

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

1913965008 is a wasteful number, since it uses less digits than its factorization.

1913965008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10044 (or 10038 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 1913965008 is about 43748.8857915262. The cubic root of 1913965008 is about 1241.5894048067.

The spelling of 1913965008 in words is "one billion, nine hundred thirteen million, nine hundred sixty-five thousand, eight".