1689748754 has 8 divisors (see below), whose sum is σ = 2540398080. Its totient is φ = 842949396.

The previous prime is 1689748741. The next prime is 1689748757. The reversal of 1689748754 is 4578479861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1689748693 and 1689748702.

It is not an unprimeable number, because it can be changed into a prime (1689748757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 961394 + ... + 963149.

It is an arithmetic number, because the mean of its divisors is an integer number (317549760).

Almost surely, 2^1689748754 is an apocalyptic number.

1689748754 is a deficient number, since it is larger than the sum of its proper divisors (850649326).

1689748754 is a wasteful number, since it uses less digits than its factorization.

1689748754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924984.

The product of its digits is 13547520, while the sum is 59.

The square root of 1689748754 is about 41106.5536624028. The cubic root of 1689748754 is about 1191.0793949013.

The spelling of 1689748754 in words is "one billion, six hundred eighty-nine million, seven hundred forty-eight thousand, seven hundred fifty-four".