1689355354 has 12 divisors (see below), whose sum is σ = 2618415882. Its totient is φ = 817429080.

The previous prime is 1689355351. The next prime is 1689355387. The reversal of 1689355354 is 4535539861.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1304293225 + 385062129 = 36115^2 + 19623^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1689355298 and 1689355307.

It is not an unprimeable number, because it can be changed into a prime (1689355351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 437557 + ... + 441400.

Almost surely, 2^1689355354 is an apocalyptic number.

1689355354 is a deficient number, since it is larger than the sum of its proper divisors (929060528).

1689355354 is an equidigital number, since it uses as much as digits as its factorization.

1689355354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879021 (or 878990 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 49.

The square root of 1689355354 is about 41101.7682587988. The cubic root of 1689355354 is about 1190.9869537418.

The spelling of 1689355354 in words is "one billion, six hundred eighty-nine million, three hundred fifty-five thousand, three hundred fifty-four".