1689853952 has 28 divisors (see below), whose sum is σ = 3379518006. Its totient is φ = 844922880.

The previous prime is 1689853951. The next prime is 1689853981. The reversal of 1689853952 is 2593589861.

It can be written as a sum of positive squares in only one way, i.e., 1682968576 + 6885376 = 41024^2 + 2624^2 .

It is not an unprimeable number, because it can be changed into a prime (1689853951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94949 + ... + 111332.

Almost surely, 2^1689853952 is an apocalyptic number.

It is an amenable number.

1689853952 is a deficient number, since it is larger than the sum of its proper divisors (1689664054).

1689853952 is an frugal number, since it uses more digits than its factorization.

1689853952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206307 (or 206283 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 56.

The square root of 1689853952 is about 41107.8332194729. The cubic root of 1689853952 is about 1191.1041119033.

The spelling of 1689853952 in words is "one billion, six hundred eighty-nine million, eight hundred fifty-three thousand, nine hundred fifty-two".