1682881278 has 16 divisors (see below), whose sum is σ = 3624667536. Its totient is φ = 517809600.

The previous prime is 1682881271. The next prime is 1682881279. The reversal of 1682881278 is 8721882861.

It is a self number, because there is not a number n which added to its sum of digits gives 1682881278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1682881271) 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 7 ways as a sum of consecutive naturals, for example, 10787623 + ... + 10787778.

It is an arithmetic number, because the mean of its divisors is an integer number (226541721).

Almost surely, 2^1682881278 is an apocalyptic number.

1682881278 is an abundant number, since it is smaller than the sum of its proper divisors (1941786258).

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

1682881278 is a wasteful number, since it uses less digits than its factorization.

1682881278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21575419.

The product of its digits is 688128, while the sum is 51.

The square root of 1682881278 is about 41022.9359992675. The cubic root of 1682881278 is about 1189.4636092111.

The spelling of 1682881278 in words is "one billion, six hundred eighty-two million, eight hundred eighty-one thousand, two hundred seventy-eight".