1780494688168 has 32 divisors (see below), whose sum is σ = 3815716239360. Its totient is φ = 762995056320.

The previous prime is 1780494688139. The next prime is 1780494688187. The reversal of 1780494688168 is 8618864940871.

It is a super-3 number, since 3×1780494688168³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1780494688097 and 1780494688106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 959848 + ... + 2117143.

It is an arithmetic number, because the mean of its divisors is an integer number (119241132480).

Almost surely, 2^{1780494688168} is an apocalyptic number.

It is an amenable number.

1780494688168 is an abundant number, since it is smaller than the sum of its proper divisors (2035221551192).

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

1780494688168 is a wasteful number, since it uses less digits than its factorization.

1780494688168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3087337 (or 3087333 counting only the distinct ones).

The product of its (nonzero) digits is 148635648, while the sum is 70.

The spelling of 1780494688168 in words is "one trillion, seven hundred eighty billion, four hundred ninety-four million, six hundred eighty-eight thousand, one hundred sixty-eight".