1689115892 has 24 divisors (see below), whose sum is σ = 3035585280. Its totient is φ = 822005280.

The previous prime is 1689115891. The next prime is 1689115913. The reversal of 1689115892 is 2985119861.

It is a super-2 number, since 2×1689115892² = 5706224993213911328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1689115892.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689115891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9209 + ... + 58847.

It is an arithmetic number, because the mean of its divisors is an integer number (126482720).

Almost surely, 2^1689115892 is an apocalyptic number.

It is an amenable number.

1689115892 is a deficient number, since it is larger than the sum of its proper divisors (1346469388).

1689115892 is a wasteful number, since it uses less digits than its factorization.

1689115892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49871 (or 49869 counting only the distinct ones).

The product of its digits is 311040, while the sum is 50.

The square root of 1689115892 is about 41098.8551178740. The cubic root of 1689115892 is about 1190.9306779177.

The spelling of 1689115892 in words is "one billion, six hundred eighty-nine million, one hundred fifteen thousand, eight hundred ninety-two".