1689744496 has 60 divisors (see below), whose sum is σ = 3733745400. Its totient is φ = 734631040.

The previous prime is 1689744493. The next prime is 1689744523. The reversal of 1689744496 is 6944479861.

It is a self number, because there is not a number n which added to its sum of digits gives 1689744496.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689744493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84030 + ... + 102178.

It is an arithmetic number, because the mean of its divisors is an integer number (62229090).

Almost surely, 2^1689744496 is an apocalyptic number.

1689744496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1689744496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1866872700).

1689744496 is an abundant number, since it is smaller than the sum of its proper divisors (2044000904).

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

1689744496 is a wasteful number, since it uses less digits than its factorization.

1689744496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18214 (or 18185 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 58.

The square root of 1689744496 is about 41106.5018701421. The cubic root of 1689744496 is about 1191.0783944330.

The spelling of 1689744496 in words is "one billion, six hundred eighty-nine million, seven hundred forty-four thousand, four hundred ninety-six".