1689916807 has 6 divisors (see below), whose sum is σ = 1795171448. Its totient is φ = 1590509664.

The previous prime is 1689916801. The next prime is 1689916847. The reversal of 1689916807 is 7086199861.

It is not a de Polignac number, because 1689916807 - 2¹⁵ = 1689884039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689916801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2923443 + ... + 2924020.

Almost surely, 2^1689916807 is an apocalyptic number.

1689916807 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1689916807 is a deficient number, since it is larger than the sum of its proper divisors (105254641).

1689916807 is an equidigital number, since it uses as much as digits as its factorization.

1689916807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5847497 (or 5847480 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 55.

The square root of 1689916807 is about 41108.5977260232. The cubic root of 1689916807 is about 1191.1188796333.

The spelling of 1689916807 in words is "one billion, six hundred eighty-nine million, nine hundred sixteen thousand, eight hundred seven".