1689115047 has 8 divisors (see below), whose sum is σ = 2265970944. Its totient is φ = 1119167928.

The previous prime is 1689115031. The next prime is 1689115049. The reversal of 1689115047 is 7405119861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1689115047 - 2⁴ = 1689115031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689115049) 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, 1726623 + ... + 1727600.

It is an arithmetic number, because the mean of its divisors is an integer number (283246368).

Almost surely, 2^1689115047 is an apocalyptic number.

1689115047 is a deficient number, since it is larger than the sum of its proper divisors (576855897).

1689115047 is a wasteful number, since it uses less digits than its factorization.

1689115047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3454389.

The product of its (nonzero) digits is 60480, while the sum is 42.

The square root of 1689115047 is about 41098.8448377810. The cubic root of 1689115047 is about 1190.9304793253.

The spelling of 1689115047 in words is "one billion, six hundred eighty-nine million, one hundred fifteen thousand, forty-seven".