1683687018670 has 32 divisors (see below), whose sum is σ = 3048657782400. Its totient is φ = 669472801056.

The previous prime is 1683687018593. The next prime is 1683687018677. The reversal of 1683687018670 is 768107863861.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1683687018599 and 1683687018608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1683687018677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4879177 + ... + 5212843.

It is an arithmetic number, because the mean of its divisors is an integer number (95270555700).

Almost surely, 2^{1683687018670} is an apocalyptic number.

1683687018670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1683687018670 is a deficient number, since it is larger than the sum of its proper divisors (1364970763730).

1683687018670 is a wasteful number, since it uses less digits than its factorization.

1683687018670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336672.

The product of its (nonzero) digits is 16257024, while the sum is 61.

The spelling of 1683687018670 in words is "one trillion, six hundred eighty-three billion, six hundred eighty-seven million, eighteen thousand, six hundred seventy".