1780013768 has 16 divisors (see below), whose sum is σ = 3594258780. Its totient is φ = 821544768.

The previous prime is 1780013743. The next prime is 1780013773. The reversal of 1780013768 is 8673100871.

It can be written as a sum of positive squares in 2 ways, for example, as 1729062724 + 50951044 = 41582^2 + 7138^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8557655 + ... + 8557862.

Almost surely, 2^1780013768 is an apocalyptic number.

It is an amenable number.

1780013768 is an abundant number, since it is smaller than the sum of its proper divisors (1814245012).

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

1780013768 is a wasteful number, since it uses less digits than its factorization.

1780013768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17115536 (or 17115532 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 1780013768 is about 42190.2093855909. The cubic root of 1780013768 is about 1211.9213987592.

The spelling of 1780013768 in words is "one billion, seven hundred eighty million, thirteen thousand, seven hundred sixty-eight".