1781480568 has 32 divisors (see below), whose sum is σ = 5089944960. Its totient is φ = 508994400.

The previous prime is 1781480549. The next prime is 1781480579. The reversal of 1781480568 is 8650841871.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5301858 + ... + 5302193.

It is an arithmetic number, because the mean of its divisors is an integer number (159060780).

Almost surely, 2^1781480568 is an apocalyptic number.

It is an amenable number.

1781480568 is an abundant number, since it is smaller than the sum of its proper divisors (3308464392).

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

1781480568 is a wasteful number, since it uses less digits than its factorization.

1781480568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10604067 (or 10604063 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 48.

The square root of 1781480568 is about 42207.5889858684. The cubic root of 1781480568 is about 1212.2541973551.

The spelling of 1781480568 in words is "one billion, seven hundred eighty-one million, four hundred eighty thousand, five hundred sixty-eight".