1689111744 has 28 divisors (see below), whose sum is σ = 4469108664. Its totient is φ = 563037184.

The previous prime is 1689111733. The next prime is 1689111751. The reversal of 1689111744 is 4471119861.

It is a junction number, because it is equal to n+sod(n) for n = 1689111696 and 1689111705.

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, 4398537 + ... + 4398920.

Almost surely, 2^1689111744 is an apocalyptic number.

It is an amenable number.

1689111744 is an abundant number, since it is smaller than the sum of its proper divisors (2779996920).

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

1689111744 is an equidigital number, since it uses as much as digits as its factorization.

1689111744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8797472 (or 8797462 counting only the distinct ones).

The product of its digits is 48384, while the sum is 42.

The square root of 1689111744 is about 41098.8046541502. The cubic root of 1689111744 is about 1190.9297030518.

The spelling of 1689111744 in words is "one billion, six hundred eighty-nine million, one hundred eleven thousand, seven hundred forty-four".