1919965424 has 40 divisors (see below), whose sum is σ = 4014972192. Its totient is φ = 884171520.

The previous prime is 1919965417. The next prime is 1919965429. The reversal of 1919965424 is 4245699191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1919965429) 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, 85877 + ... + 105899.

Almost surely, 2^1919965424 is an apocalyptic number.

It is an amenable number.

1919965424 is an abundant number, since it is smaller than the sum of its proper divisors (2095006768).

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

1919965424 is a wasteful number, since it uses less digits than its factorization.

1919965424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20505 (or 20499 counting only the distinct ones).

The product of its digits is 699840, while the sum is 50.

The square root of 1919965424 is about 43817.4100558214. The cubic root of 1919965424 is about 1242.8855415263.

The spelling of 1919965424 in words is "one billion, nine hundred nineteen million, nine hundred sixty-five thousand, four hundred twenty-four".