1956391424 has 160 divisors (see below), whose sum is σ = 4417592256. Its totient is φ = 859668480.

The previous prime is 1956391421. The next prime is 1956391441. The reversal of 1956391424 is 4241936591.

It is not an unprimeable number, because it can be changed into a prime (1956391421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18283979 + ... + 18284085.

Almost surely, 2^1956391424 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 1956391424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2208796128).

1956391424 is an abundant number, since it is smaller than the sum of its proper divisors (2461200832).

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

1956391424 is a wasteful number, since it uses less digits than its factorization.

1956391424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 230 counting only the distinct ones).

The product of its digits is 233280, while the sum is 44.

The square root of 1956391424 is about 44231.1137549124. The cubic root of 1956391424 is about 1250.6964490150.

The spelling of 1956391424 in words is "one billion, nine hundred fifty-six million, three hundred ninety-one thousand, four hundred twenty-four".