1685427115 has 4 divisors (see below), whose sum is σ = 2022512544. Its totient is φ = 1348341688.

The previous prime is 1685427101. The next prime is 1685427131. The reversal of 1685427115 is 5117245861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1685427115 - 2⁷ = 1685426987 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168542707 + ... + 168542716.

It is an arithmetic number, because the mean of its divisors is an integer number (505628136).

Almost surely, 2^1685427115 is an apocalyptic number.

1685427115 is a deficient number, since it is larger than the sum of its proper divisors (337085429).

1685427115 is an equidigital number, since it uses as much as digits as its factorization.

1685427115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337085428.

The product of its digits is 67200, while the sum is 40.

The square root of 1685427115 is about 41053.9537072862. The cubic root of 1685427115 is about 1190.0631077800.

The spelling of 1685427115 in words is "one billion, six hundred eighty-five million, four hundred twenty-seven thousand, one hundred fifteen".