1685287742 has 16 divisors (see below), whose sum is σ = 2596007232. Its totient is φ = 820150560.

The previous prime is 1685287733. The next prime is 1685287753. The reversal of 1685287742 is 2477825861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32513 + ... + 66540.

It is an arithmetic number, because the mean of its divisors is an integer number (162250452).

Almost surely, 2^1685287742 is an apocalyptic number.

1685287742 is a deficient number, since it is larger than the sum of its proper divisors (910719490).

1685287742 is a wasteful number, since it uses less digits than its factorization.

1685287742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99283.

The product of its digits is 1505280, while the sum is 50.

The square root of 1685287742 is about 41052.2562351937. The cubic root of 1685287742 is about 1190.0303035853.

The spelling of 1685287742 in words is "one billion, six hundred eighty-five million, two hundred eighty-seven thousand, seven hundred forty-two".