1685127849 has 8 divisors (see below), whose sum is σ = 2247060000. Its totient is φ = 1123307136.

The previous prime is 1685127833. The next prime is 1685127877. The reversal of 1685127849 is 9487215861.

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

It is not a de Polignac number, because 1685127849 - 2⁴ = 1685127833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1685127809) 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, 18402 + ... + 60900.

It is an arithmetic number, because the mean of its divisors is an integer number (280882500).

Almost surely, 2^1685127849 is an apocalyptic number.

It is an amenable number.

1685127849 is a deficient number, since it is larger than the sum of its proper divisors (561932151).

1685127849 is a wasteful number, since it uses less digits than its factorization.

1685127849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55719.

The product of its digits is 967680, while the sum is 51.

The square root of 1685127849 is about 41050.3087564515. The cubic root of 1685127849 is about 1189.9926673747.

The spelling of 1685127849 in words is "one billion, six hundred eighty-five million, one hundred twenty-seven thousand, eight hundred forty-nine".