1689992448 has 144 divisors (see below), whose sum is σ = 4648154112. Its totient is φ = 544768000.

The previous prime is 1689992443. The next prime is 1689992467. The reversal of 1689992448 is 8442999861.

It is a junction number, because it is equal to n+sod(n) for n = 1689992391 and 1689992400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689992443) 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, 6014068 + ... + 6014348.

It is an arithmetic number, because the mean of its divisors is an integer number (32278848).

Almost surely, 2^1689992448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1689992448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2324077056).

1689992448 is an abundant number, since it is smaller than the sum of its proper divisors (2958161664).

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

1689992448 is a wasteful number, since it uses less digits than its factorization.

1689992448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532 (or 518 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 60.

The square root of 1689992448 is about 41109.5177300829. The cubic root of 1689992448 is about 1191.1366509379.

The spelling of 1689992448 in words is "one billion, six hundred eighty-nine million, nine hundred ninety-two thousand, four hundred forty-eight".