1689267748 has 72 divisors (see below), whose sum is σ = 3672587520. Its totient is φ = 676388160.

The previous prime is 1689267739. The next prime is 1689267799. The reversal of 1689267748 is 8477629861.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a junction number, because it is equal to n+sod(n) for n = 1689267692 and 1689267701.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171411 + ... + 180997.

It is an arithmetic number, because the mean of its divisors is an integer number (51008160).

Almost surely, 2^1689267748 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 1689267748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1836293760).

1689267748 is an abundant number, since it is smaller than the sum of its proper divisors (1983319772).

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

1689267748 is a wasteful number, since it uses less digits than its factorization.

1689267748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9665 (or 9656 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 58.

The square root of 1689267748 is about 41100.7025244095. The cubic root of 1689267748 is about 1190.9663661241.

The spelling of 1689267748 in words is "one billion, six hundred eighty-nine million, two hundred sixty-seven thousand, seven hundred forty-eight".