1787842056 has 128 divisors (see below), whose sum is σ = 6001228800. Its totient is φ = 428647680.

The previous prime is 1787842037. The next prime is 1787842061. The reversal of 1787842056 is 6502487871.

It is a junction number, because it is equal to n+sod(n) for n = 1787841996 and 1787842014.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 13186 + ... + 61233.

It is an arithmetic number, because the mean of its divisors is an integer number (46884600).

Almost surely, 2^1787842056 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 1787842056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3000614400).

1787842056 is an abundant number, since it is smaller than the sum of its proper divisors (4213386744).

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

1787842056 is a wasteful number, since it uses less digits than its factorization.

1787842056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74459 (or 74455 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 48.

The square root of 1787842056 is about 42282.8813587721. The cubic root of 1787842056 is about 1213.6954291693.

The spelling of 1787842056 in words is "one billion, seven hundred eighty-seven million, eight hundred forty-two thousand, fifty-six".