1689747692 has 12 divisors (see below), whose sum is σ = 2958848256. Its totient is φ = 844362480.

The previous prime is 1689747677. The next prime is 1689747707. The reversal of 1689747692 is 2967479861.

It is an interprime number because it is at equal distance from previous prime (1689747677) and next prime (1689747707).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120359 + ... + 133662.

It is an arithmetic number, because the mean of its divisors is an integer number (246570688).

Almost surely, 2^1689747692 is an apocalyptic number.

It is an amenable number.

1689747692 is a deficient number, since it is larger than the sum of its proper divisors (1269100564).

1689747692 is a wasteful number, since it uses less digits than its factorization.

1689747692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255688 (or 255686 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 59.

The square root of 1689747692 is about 41106.5407447525. The cubic root of 1689747692 is about 1191.0791453718.

The spelling of 1689747692 in words is "one billion, six hundred eighty-nine million, seven hundred forty-seven thousand, six hundred ninety-two".