1787380056 has 432 divisors, whose sum is σ = 6386234400. Its totient is φ = 449729280.

The previous prime is 1787380033. The next prime is 1787380069. The reversal of 1787380056 is 6500837871.

It is a junction number, because it is equal to n+sod(n) for n = 1787379993 and 1787380020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 22625025 + ... + 22625103.

It is an arithmetic number, because the mean of its divisors is an integer number (14782950).

Almost surely, 2^1787380056 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 1787380056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3193117200).

1787380056 is an abundant number, since it is smaller than the sum of its proper divisors (4598854344).

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

1787380056 is a wasteful number, since it uses less digits than its factorization.

1787380056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 1787380056 is about 42277.4178019424. The cubic root of 1787380056 is about 1213.5908756392.

The spelling of 1787380056 in words is "one billion, seven hundred eighty-seven million, three hundred eighty thousand, fifty-six".