1780465068 has 36 divisors (see below), whose sum is σ = 4516549128. Its totient is φ = 591387840.

The previous prime is 1780465051. The next prime is 1780465069. The reversal of 1780465068 is 8605640871.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1780465069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77193 + ... + 97568.

It is an arithmetic number, because the mean of its divisors is an integer number (125459698).

Almost surely, 2^1780465068 is an apocalyptic number.

1780465068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1780465068 is an abundant number, since it is smaller than the sum of its proper divisors (2736084060).

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

1780465068 is a wasteful number, since it uses less digits than its factorization.

1780465068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175054 (or 175049 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 1780465068 is about 42195.5574438826. The cubic root of 1780465068 is about 1212.0238125570.

The spelling of 1780465068 in words is "one billion, seven hundred eighty million, four hundred sixty-five thousand, sixty-eight".